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Fill in the correct preposition (in / on / at): 'We will meet ___ the evening.'
In English, months, years, and long periods take 'in', so the answer is 'in'.
in
prepositions
medium
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Rewrite this sentence with correct capitalization: 'i am learning french and german.'
Capitalize the first word of the sentence and all proper nouns (names, places, months, days, languages).
I am learning French and German.
capitalization
medium
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Correct the spelling of this word: 'occured'.
The correct spelling is 'occurred'.
occurred
spelling
medium
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Fill in the correct preposition (in / on / at): 'We will meet ___ Tuesday morning.'
In English, days and dates take 'on', so the answer is 'on'.
on
prepositions
medium
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Choose the correct verb form: 'They ___ every day.' (carry / carries)
'They' is plural, so it takes 'carry'.
carry
subject-verb-agreement
medium
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Give an antonym (opposite) of 'dark'.
The opposite of 'dark' is 'light'.
light
antonyms
easy
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Give a synonym (word with a similar meaning) for 'wealthy'.
'wealthy' and 'rich' have similar meanings.
rich
synonyms
easy
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Give an antonym (opposite) of 'down'.
The opposite of 'down' is 'up'.
up
antonyms
easy
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Give a synonym (word with a similar meaning) for 'purchase'.
'purchase' and 'buy' have similar meanings.
buy
synonyms
easy
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Give a synonym (word with a similar meaning) for 'small'.
'small' and 'tiny' have similar meanings.
tiny
synonyms
easy
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Write the comparative form of the adjective 'popular'.
For 'popular' we use 'more' before a long adjective, giving 'more popular'.
more popular
comparatives
medium
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Rearrange these words to form a correct sentence: park / play / in / the / we
Putting the words in subject-verb-object order gives a correct sentence.
We play in the park.
sentence-order
medium
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Give a synonym (word with a similar meaning) for 'simple'.
'simple' and 'easy' have similar meanings.
easy
synonyms
easy
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Give an antonym (opposite) of 'close'.
The opposite of 'close' is 'open'.
open
antonyms
easy
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Fill in the correct preposition (in / on / at): 'We will meet ___ noon.'
In English, clock times and specific points take 'at', so the answer is 'at'.
at
prepositions
medium
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Rewrite this sentence in the past tense: 'My friends hold a book.'
'hold' is an irregular verb, so its past tense is 'held'.
My friends held a book.
past-tense
medium
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Fill in the blank with 'a' or 'an': He wants ___ idea.
'idea' begins with a vowel sound, so use 'an'.
an
articles
easy
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Choose the correct verb form: 'The children ___ every day.' (eat / eats)
'The children' is plural, so it takes 'eat'.
eat
subject-verb-agreement
medium
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Choose the correct verb form: 'My friends ___ every day.' (study / studies)
'My friends' is plural, so it takes 'study'.
study
subject-verb-agreement
medium
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Write the comparative form of the adjective 'angry'.
For 'angry' we change 'y' to 'i' and add '-er', giving 'angrier'.
angrier
comparatives
medium
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Rearrange these words to form a correct sentence: the / the / cat / on / sat / mat
Putting the words in subject-verb-object order gives a correct sentence.
The cat sat on the mat.
sentence-order
medium
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Give a synonym (word with a similar meaning) for 'start'.
'start' and 'begin' have similar meanings.
begin
synonyms
easy
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Rewrite this sentence in the past tense: 'They hold the door.'
'hold' is an irregular verb, so its past tense is 'held'.
They held the door.
past-tense
medium
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Rewrite this sentence in the past tense: 'They break their homework.'
'break' is an irregular verb, so its past tense is 'broke'.
They broke their homework.
past-tense
medium
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Correct the spelling of this word: 'calender'.
The correct spelling is 'calendar'.
calendar
spelling
medium
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Fill in the correct preposition (in / on / at): 'We will meet ___ July.'
In English, months, years, and long periods take 'in', so the answer is 'in'.
in
prepositions
medium
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Fill in the blank with 'a' or 'an': She bought ___ honest man.
'honest' begins with a vowel sound, so use 'an'.
an
articles
easy
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Rewrite this sentence with correct capitalization: 'dr smith works in london.'
Capitalize the first word of the sentence and all proper nouns (names, places, months, days, languages).
Dr Smith works in London.
capitalization
medium
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Fill in the blank with 'a' or 'an': I saw ___ igloo today.
'igloo' begins with a vowel sound, so use 'an'.
an
articles
easy
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Give an antonym (opposite) of 'cold'.
The opposite of 'cold' is 'hot'.
hot
antonyms
easy
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Write the plural form of the noun 'sheep'.
'sheep' has an irregular plural: 'sheep'.
sheep
plurals
easy
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Give a synonym (word with a similar meaning) for 'fast'.
'fast' and 'quick' have similar meanings.
quick
synonyms
easy
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Choose the correct verb form: 'My sister ___ every day.' (wash / washes)
'My sister' is singular, so it takes 'washes'.
washes
subject-verb-agreement
medium
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Fill in the correct preposition (in / on / at): 'We will meet ___ New Year's Day.'
In English, days and dates take 'on', so the answer is 'on'.
on
prepositions
medium
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Write the plural form of the noun 'man'.
'man' has an irregular plural: 'men'.
men
plurals
easy
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Give an antonym (opposite) of 'up'.
The opposite of 'up' is 'down'.
down
antonyms
easy
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Rewrite this sentence in the past tense: 'I get a story.'
'get' is an irregular verb, so its past tense is 'got'.
I got a story.
past-tense
medium
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Rewrite this sentence with correct capitalization: 'they play cricket every sunday.'
Capitalize the first word of the sentence and all proper nouns (names, places, months, days, languages).
They play cricket every Sunday.
capitalization
medium
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Give an antonym (opposite) of 'happy'.
The opposite of 'happy' is 'sad'.
sad
antonyms
easy
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Rearrange these words to form a correct sentence: a / reads / she / night / every / book
Putting the words in subject-verb-object order gives a correct sentence.
She reads a book every night.
sentence-order
medium
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Fill in the blank with 'a' or 'an': He wants ___ airplane.
'airplane' begins with a vowel sound, so use 'an'.
an
articles
easy
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Choose the correct verb form: 'My friends ___ every day.' (carry / carries)
'My friends' is plural, so it takes 'carry'.
carry
subject-verb-agreement
medium
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Fill in the correct preposition (in / on / at): 'We will meet ___ summer.'
In English, months, years, and long periods take 'in', so the answer is 'in'.
in
prepositions
medium
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Rearrange these words to form a correct sentence: park / the / in / we / play
Putting the words in subject-verb-object order gives a correct sentence.
We play in the park.
sentence-order
medium
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Choose the correct verb form: 'The girl ___ every day.' (teach / teaches)
'The girl' is singular, so it takes 'teaches'.
teaches
subject-verb-agreement
medium
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Rearrange these words to form a correct sentence: the / after / dog / ball / the / runs
Putting the words in subject-verb-object order gives a correct sentence.
The dog runs after the ball.
sentence-order
medium
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Give a synonym (word with a similar meaning) for 'incorrect'.
'incorrect' and 'wrong' have similar meanings.
wrong
synonyms
easy
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Choose the correct verb form: 'The boys ___ every day.' (play / plays)
'The boys' is plural, so it takes 'play'.
play
subject-verb-agreement
medium
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Rearrange these words to form a correct sentence: sings / a / lovely / song / she
Putting the words in subject-verb-object order gives a correct sentence.
She sings a lovely song.
sentence-order
medium
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Rewrite this sentence in the past tense: 'I climb the song.'
'climb' is a regular verb (add -ed), so its past tense is 'climbed'.
I climbed the song.
past-tense
medium
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Write the plural form of the noun 'toy'.
Most nouns just add '-s', giving 'toys'.
toys
plurals
easy
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Write the comparative form of the adjective 'pretty'.
For 'pretty' we change 'y' to 'i' and add '-er', giving 'prettier'.
prettier
comparatives
medium
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Rewrite this sentence with correct capitalization: 'we celebrate diwali in november.'
Capitalize the first word of the sentence and all proper nouns (names, places, months, days, languages).
We celebrate Diwali in November.
capitalization
medium
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Rewrite this sentence in the past tense: 'You come the garden.'
'come' is an irregular verb, so its past tense is 'came'.
You came the garden.
past-tense
medium
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Correct the spelling of this word: 'neccessary'.
The correct spelling is 'necessary'.
necessary
spelling
medium
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Fill in the correct preposition (in / on / at): 'We will meet ___ Monday.'
In English, days and dates take 'on', so the answer is 'on'.
on
prepositions
medium
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Fill in the correct preposition (in / on / at): 'We will meet ___ sunset.'
In English, clock times and specific points take 'at', so the answer is 'at'.
at
prepositions
medium
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Write the plural form of the noun 'cat'.
Most nouns just add '-s', giving 'cats'.
cats
plurals
easy
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Correct the spelling of this word: 'untill'.
The correct spelling is 'until'.
until
spelling
medium
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Rewrite this sentence with correct capitalization: 'i live in paris.'
Capitalize the first word of the sentence and all proper nouns (names, places, months, days, languages).
I live in Paris.
capitalization
medium
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Rewrite this sentence in the past tense: 'We throw their homework.'
'throw' is an irregular verb, so its past tense is 'threw'.
We threw their homework.
past-tense
medium
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Fill in the blank with 'a' or 'an': We found ___ engineer in the park.
'engineer' begins with a vowel sound, so use 'an'.
an
articles
easy
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Rearrange these words to form a correct sentence: in / the / sleeps / baby / crib / the
Putting the words in subject-verb-object order gives a correct sentence.
The baby sleeps in the crib.
sentence-order
medium
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Choose the correct verb form: 'The boys ___ every day.' (like / likes)
'The boys' is plural, so it takes 'like'.
like
subject-verb-agreement
medium
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Write the comparative form of the adjective 'lucky'.
For 'lucky' we change 'y' to 'i' and add '-er', giving 'luckier'.
luckier
comparatives
medium
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Choose the correct verb form: 'The boy ___ every day.' (carry / carries)
'The boy' is singular, so it takes 'carries'.
carries
subject-verb-agreement
medium
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Rewrite this sentence in the past tense: 'My friends plant a letter.'
'plant' is a regular verb (add -ed), so its past tense is 'planted'.
My friends planted a letter.
past-tense
medium
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Correct the spelling of this word: 'beleive'.
The correct spelling is 'believe'.
believe
spelling
medium
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Correct the spelling of this word: 'goverment'.
The correct spelling is 'government'.
government
spelling
medium
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Write the comparative form of the adjective 'thin'.
For 'thin' we double the final consonant and add '-er', giving 'thinner'.
thinner
comparatives
medium
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Fill in the correct preposition (in / on / at): 'We will meet ___ Friday.'
In English, days and dates take 'on', so the answer is 'on'.
on
prepositions
medium
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Fill in the blank with 'a' or 'an': There is ___ university on the table.
'university' begins with a consonant sound, so use 'a'.
a
articles
easy
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Fill in the blank with 'a' or 'an': I saw ___ island today.
'island' begins with a vowel sound, so use 'an'.
an
articles
easy
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Choose the correct verb form: 'My friends ___ every day.' (teach / teaches)
'My friends' is plural, so it takes 'teach'.
teach
subject-verb-agreement
medium
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Correct the spelling of this word: 'enviroment'.
The correct spelling is 'environment'.
environment
spelling
medium
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Fill in the blank with 'a' or 'an': We found ___ igloo in the park.
'igloo' begins with a vowel sound, so use 'an'.
an
articles
easy
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Correct the spelling of this word: 'freind'.
The correct spelling is 'friend'.
friend
spelling
medium
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Correct the spelling of this word: 'adress'.
The correct spelling is 'address'.
address
spelling
medium
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Give a synonym (word with a similar meaning) for 'sick'.
'sick' and 'ill' have similar meanings.
ill
synonyms
easy
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Give a synonym (word with a similar meaning) for 'cold'.
'cold' and 'chilly' have similar meanings.
chilly
synonyms
easy
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Fill in the blank with 'a' or 'an': I saw ___ chair today.
'chair' begins with a consonant sound, so use 'a'.
a
articles
easy
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Rewrite this sentence in the past tense: 'We finish some food.'
'finish' is a regular verb (add -ed), so its past tense is 'finished'.
We finished some food.
past-tense
medium
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Fill in the blank with 'a' or 'an': He wants ___ flower.
'flower' begins with a consonant sound, so use 'a'.
a
articles
easy
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Fill in the correct preposition (in / on / at): 'We will meet ___ midnight.'
In English, clock times and specific points take 'at', so the answer is 'at'.
at
prepositions
medium
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Rearrange these words to form a correct sentence: sings / song / lovely / she / a
Putting the words in subject-verb-object order gives a correct sentence.
She sings a lovely song.
sentence-order
medium
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Give an antonym (opposite) of 'difficult'.
The opposite of 'difficult' is 'easy'.
easy
antonyms
easy
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Rewrite this sentence with correct capitalization: 'mount everest is in nepal.'
Capitalize the first word of the sentence and all proper nouns (names, places, months, days, languages).
Mount Everest is in Nepal.
capitalization
medium
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Write the comparative form of the adjective 'dangerous'.
For 'dangerous' we use 'more' before a long adjective, giving 'more dangerous'.
more dangerous
comparatives
medium
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Correct the spelling of this word: 'seperate'.
The correct spelling is 'separate'.
separate
spelling
medium
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Choose the correct verb form: 'She ___ every day.' (do / dos)
'She' is singular, so it takes 'dos'.
dos
subject-verb-agreement
medium
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Give an antonym (opposite) of 'poor'.
The opposite of 'poor' is 'rich'.
rich
antonyms
easy
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Write the plural form of the noun 'tomato'.
'tomato' has an irregular plural: 'tomatoes'.
tomatoes
plurals
easy
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Write the comparative form of the adjective 'fit'.
For 'fit' we double the final consonant and add '-er', giving 'fitter'.
fitter
comparatives
medium
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Fill in the blank with 'a' or 'an': We found ___ onion in the park.
'onion' begins with a vowel sound, so use 'an'.
an
articles
easy
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Write the comparative form of the adjective 'dark'.
For 'dark' we add '-er' to a short adjective, giving 'darker'.
darker
comparatives
medium
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Fill in the blank with 'a' or 'an': He wants ___ lion.
'lion' begins with a consonant sound, so use 'a'.
a
articles
easy
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Correct the spelling of this word: 'becuase'.
The correct spelling is 'because'.
because
spelling
medium
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Write the plural form of the noun 'pen'.
Most nouns just add '-s', giving 'pens'.
pens
plurals
easy
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Rewrite this sentence with correct capitalization: 'she was born on a monday in may.'
Capitalize the first word of the sentence and all proper nouns (names, places, months, days, languages).
She was born on a Monday in May.
capitalization
medium
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
Fill in the blank with 'a' or 'an': He wants ___ oven.
'oven' begins with a vowel sound, so use 'an'.
an
articles
easy
Abhilash AI Research Lab (synthetic, programmatically generated; no third-party LLM)
End of preview. Expand in Data Studio

Abhilash AI Research Lab — English Grammar & Usage (english)

A synthetic dataset of ~5,000 grammar, vocabulary, and usage exercises, from the Abhilash AI Research Lab.

How it was made

Every example is produced by generators written for this project — hand-authored templates, rule tables, and solvers. Answers are computed in code (math and reasoning) or derived from authored rule tables (English), so each answer is verifiable and the whole set is reproducible from a fixed random seed.

No third-party language model was used to generate the content. This is a synthetic educational dataset for research and experimentation. It is not a benchmark and not human-expert-curated. Some phrasing is templated.

Fields

field description
question the task / prompt
reasoning a step-by-step worked explanation
answer the final answer
topic sub-category
difficulty easy / medium / hard
source provenance string

Generator source

Code: https://github.com/shishodiaabhilash/synthetic-datasets

License

Apache-2.0.

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