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').
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Question: Double price is based on two golfers sharing ____ room.\Question: Choose the right answer from options given a) one b) zero c) six d) nine

Answer: a


Question: Humans normally produce only ____ sets of teeth.\Question: Choose the right answer from options given a) nine b) eight c) two d) three

Answer: c


Question: General aviation flies almost ____ billion air miles every year.\Question: Choose the right answer from options given a) four b) ten c) nine d) two

Answer:
a