Manypeopledonotrealizetheimportanceofhealth

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問題詳情:

 Manypeopledonotrealizetheimportanceofhealth

 Many people do not realize the importance of health ________ they become ill.

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

【回答】

A

知識點:連詞

題型:選擇題

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