TASK DEFINITION: Given a sentence with a missing word, pick the answer option that best fills out the missing word in the sentence. Indicate each answer with its index ('a', 'b', 'c', 'd').
PROBLEM: Poisons come in ____ different forms .\Question: Choose the right answer from options given a) four b) no c) five d) ten

SOLUTION: a

PROBLEM: Most children have a vocabulary of eight to ____ words, including names, by eighteen months of age.\Question: Choose the right answer from options given a) ten b) one c) seven d) eight

SOLUTION: a

PROBLEM: Pups are unable to swim or find food until seven to ____ weeks old or until the ice melts.\Question: Choose the right answer from options given a) no b) six c) three d) eight

SOLUTION:
d