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: Many people have ____ symptoms until they suffer chest pains or a heart attack.\Question: Choose the right answer from options given a) three b) one c) no d) seven

SOLUTION: c

PROBLEM: Cats have ____ lives.\Question: Choose the right answer from options given a) five b) one c) two d) nine

SOLUTION: d

PROBLEM: Some networks are small, involving as little as ____ computers.\Question: Choose the right answer from options given a) two b) nine c) six d) no

SOLUTION:
a