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 are completely nutritionally dependent on their mothers to ____ months old.\Question: Choose the right answer from options given a) three b) zero c) five d) no

SOLUTION: a

PROBLEM: Many scientists believe the neutrino has ____ mass at all.\Question: Choose the right answer from options given a) eight b) zero c) two d) no

SOLUTION: d

PROBLEM: Dialogue is ____ sides working together toward a common understanding.\Question: Choose the right answer from options given a) two b) one c) nine d) four

SOLUTION:
a