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: Electrolytic capacitors have a finite lifetime, usually about ____ years.\Question: Choose the right answer from options given a) zero b) ten c) four d) eight

SOLUTION: b

PROBLEM: Some families have two daddies or ____ mommies.\Question: Choose the right answer from options given a) nine b) seven c) zero d) two

SOLUTION: d

PROBLEM: Electrons move ____ times faster through gallium arsenide than through silicon.\Question: Choose the right answer from options given a) seven b) no c) zero d) five

SOLUTION:
d