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: Calves remain hidden for much of the time, and are weaned by ____ months of age.\Question: Choose the right answer from options given a) six b) three c) eight d) one

SOLUTION: b

PROBLEM: Infants can tell their mothers from other mothers in ____ days.\Question: Choose the right answer from options given a) no b) zero c) five d) three

SOLUTION: d

PROBLEM: Matter comes in ____ phases, or states.\Question: Choose the right answer from options given a) three b) nine c) eight d) five

SOLUTION:
d