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: Many tractors have ____ wheel drive to get extra grip on the hills and in wet conditions.\Question: Choose the right answer from options given a) four b) seven c) five d) two

SOLUTION: a

PROBLEM: Echinoderms usually have ____ appendages, but there are some exceptions.\Question: Choose the right answer from options given a) ten b) five c) seven d) three

SOLUTION: b

PROBLEM: Calves are weaned at ____ months, following which time they join groups of calves of their own age.\Question: Choose the right answer from options given a) seven b) three c) two d) eight

SOLUTION:
d