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: Streptomyces are of special interest for ____ reasons.\Question: Choose the right answer from options given a) nine b) seven c) four d) two

SOLUTION: d

PROBLEM: Respiratory therapists complete ____ to four years of education.\Question: Choose the right answer from options given a) one b) nine c) zero d) two

SOLUTION: d

PROBLEM: Etruscan vaults are of ____ kinds.\Question: Choose the right answer from options given a) five b) zero c) two d) one

SOLUTION:
c