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: Some infected people have ____ symptoms at all.\Question: Choose the right answer from options given a) four b) eight c) no d) five

SOLUTION: c

PROBLEM: Most linguists organize the African languages into ____ major language families.\Question: Choose the right answer from options given a) three b) four c) eight d) no

SOLUTION: b

PROBLEM: Women are ____ times as likely as men are to develop osteoporosis.\Question: Choose the right answer from options given a) zero b) four c) one d) nine

SOLUTION:
b