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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. until           B. while               C. when                D. after

【回答】

A

知識點:連詞

題型:選擇題

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