--- Has Li Lei finished his work today?--- I have no idea, but he it when I saw him this

发布时间：2020-08-16 08:37:21


--- Has Li Lei finished his work today?
--- I have no idea, but he      it when I saw him this morning.
A. had done
B. would do
C. was doing
D. did

网友回答

A. had done
B. would do
(答案→)C. was doing
D. did
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