She _____ fifty or so when I first met her at a conference.
She_____fiftyorsowhenIfirstmetherataconference.A.hadbeenB.mustbeC.hasbeenD.musthavebe...
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
答案是d.麻烦各个选项解释一下谢谢.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.?.谢谢喇. 展开
A. had been B. must be C. has been D. must have been
答案是d.麻烦各个选项解释一下谢谢.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.?.谢谢喇. 展开
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