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   Manypeopledonotrealizetheimportanceofhealth

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問題詳情:

   Manypeopledonotrealizetheimportanceofhealth

    Many people do not realize the importance of health __________ they have fallen ill.

     A. since                 B. until                         C. while                       D. after

【回答】

B

知識點:連詞

題型:選擇題

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