The room must have been cleaned by Tom yesterday, ________ it?

TheroommusthavebeencleanedbyTomyesterday,________it?A.mustn'tB.hasn'tC.didn'tD.wasn't... The room must have been cleaned by Tom yesterday, ________ it?
A. mustn't B. hasn't C. didn't D. wasn't
选D 展开

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#热议# 空调使用不当可能引发哪些疾病？

miaomiao7502
2011-07-18 · TA获得超过4万个赞

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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
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
有不会的可以再问我

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留了一个疤
2011-07-18 · TA获得超过1万个赞

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D 前面的句中用must表示猜测，而在反义疑问句中要根据实际情况。

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