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: Heat pumps give off ____ fumes or harmful products of combustion.\Question: Choose the right answer from options given a) four b) zero c) six d) no

SOLUTION: d

PROBLEM: Moles breed in late winter or spring and have a gestation period of ____ to six weeks.\Question: Choose the right answer from options given a) nine b) four c) six d) five

SOLUTION: b

PROBLEM: Guinea pigs are pregnant less than ____ months.\Question: Choose the right answer from options given a) three b) nine c) seven d) eight

SOLUTION:
a