You _____ not have seen her yesterday,for she was abroad.

问题描述:

You _____ not have seen her yesterday,for she was abroad.
A.must B.should C.could D.would

C
表示否定定猜测,你昨天不可能看到她,因为她出国了
must have done表看到猜测,肯定做了某事
should have done本该做的事情却没有做
would have done过去认为将来会做的事