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: Astronomers fall in ____ classes - professionals and amateurs.\Question: Choose the right answer from options given a) two b) four c) six d) zero

SOLUTION: a

PROBLEM: Oar boats are smaller than motor boats and can accommodate four to ____ people.\Question: Choose the right answer from options given a) zero b) three c) five d) no

SOLUTION: c

PROBLEM: Sugar has lots of calories and ____ vitamins or minerals, and it causes dental cavities.\Question: Choose the right answer from options given a) no b) eight c) six d) nine

SOLUTION:
a