And while you___drink too many drinks containing caffeine,there's researched evidence that a hot cup of tea or coffee___actually cool you down . A needn't;can B needn't;must C shouldn't;must D shouldn't;can

36.It is important to stay hydrated(含水的)during hot weather. And while you___drink too many drinks containing caffeine,there's researched evidence that a hot cup of tea or coffee___actually cool you down . 

A needn't;can 

B needn't;must 

C shouldn't;must 

D shouldn't;can

参考答案与解析：

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