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: All spider mites have ____ legs and a lack of a separate head.\Question: Choose the right answer from options given a) eight b) four c) ten d) one

SOLUTION: a

PROBLEM: Babies are born about ____ weeks after mating.\Question: Choose the right answer from options given a) five b) two c) three d) zero

SOLUTION:
a