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5.Bruce must have been in China for a long time,_____?A.hasn

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5.Bruce must have been in China for a long time,_____?A.hasn’t he B.mustn’t he C.Isn’t he D.was
must have been 表示对过去事实的肯定猜测,本题为什么选A而不选D
5.Bruce must have been in China for a long time,_____?
A.hasn’t he B.mustn’t he C.Isn’t he D.wasn’t he
must have been 表示对过去事实的肯定猜测,本题为什么选A而不选D
在这类表示推测的句子转换成反义疑问句时,要先还原句子,将推测的部分去掉,然后再进行反义疑问的变换.原句就变成Bruce has been in China for a long time.后面填 hasn't it