作业帮The room must have been cleaned by Tom yesterday,________ it
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The room must have been cleaned by Tom yesterday,________ it?
A.mustn't B.hasn't C.didn't D.wasn't
选D
A.mustn't B.hasn't C.didn't D.wasn't
选D
The room must have been cleaned by Tom yesterday,________ it?
A.mustn't B.hasn't C.didn't D.wasn't
选D
这边是【must have been done】的结构,表示的是一种对过去的推测
所以反义疑问句不用mustn't it 而用【wasn't it】这是一种特殊用法
A.mustn't B.hasn't C.didn't D.wasn't
选D
这边是【must have been done】的结构,表示的是一种对过去的推测
所以反义疑问句不用mustn't it 而用【wasn't it】这是一种特殊用法
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