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: Hamsters can live to be three to ____ years old.\Question: Choose the right answer from options given a) four b) two c) three d) nine

Answer: a


Question: Foresters usually work ____ hours a day, five days a week.\Question: Choose the right answer from options given a) six b) five c) seven d) eight

Answer: d


Question: Bilingual education uses ____ languages as the media of instruction.\Question: Choose the right answer from options given a) ten b) six c) seven d) two

Answer:
d