问题 选择题

I have been working with Lily for years, and never before        her so serious!

A.I found

B.I have found

C.did I find

D.have I found

答案

答案:C

句意:我和Lily共事多年,从来没见过她如此严肃。never置于句首,后面要用部分倒装。

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