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 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: Sugar beet is strongly self-sterile setting few or ____ seeds under strict isolation.\Question: Choose the right answer from options given a) three b) no c) five d) nine

SOLUTION: b

PROBLEM: Most infections clear up by themselves within ____ to eight weeks.\Question: Choose the right answer from options given a) six b) four c) nine d) three

SOLUTION:
b