She _____ fifty or so when I first met her at a conference.
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She _____ fifty or so when I first met her at a conference.
A.had been B.must be C.has been D.must have been
尤其为什么不能选a..后面的时态不是过去式的么..那算在那个时候起已经50了有错..
A.had been B.must be C.has been D.must have been
尤其为什么不能选a..后面的时态不是过去式的么..那算在那个时候起已经50了有错..
D.must have been
首先就知道,最基本是选B.must be 表示推测,她一定有五十上下了,
后面又有一句:在我第一次在一个会议上见到她.这是过去式.
那么推测的结果,就只能用过去完成时了.
过去的过去.
must be-------must have been
D
首先就知道,最基本是选B.must be 表示推测,她一定有五十上下了,
后面又有一句:在我第一次在一个会议上见到她.这是过去式.
那么推测的结果,就只能用过去完成时了.
过去的过去.
must be-------must have been
D
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