选择:You have been doing washing all the morning.You must be t

问题描述:

选择:You have been doing washing all the morning.You must be tired,( )you?
A.mustn`t B.are C.aren`t D.must
1个回答 分类:英语 2014-09-17

问题解答:

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You have been doing washing all the morning.You must be tired,(aren't)you?表示肯定猜测.
 
 
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