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: Most gerbils live three to ____ years and have few health problems.\Question: Choose the right answer from options given a) three b) four c) seven d) zero

SOLUTION: b

PROBLEM: Gasoline is ____ times as expensive as in the United States.\Question: Choose the right answer from options given a) two b) four c) three d) ten

SOLUTION: c

PROBLEM: Term loans are bank loans generally made for periods from one to ____ years.\Question: Choose the right answer from options given a) five b) six c) four d) ten

SOLUTION:
a