I'll go to the library as soon as I finish what I A. was doingB. am doingC. have doneD. ha

发布时间：2020-08-16 17:55:40

I'll go to the library as soon as I finish what I             
A. was doing
B. am doing
C. have done
D. had been doing

网友回答

A. was doing
(答案→)B. am doing
C. have done
D. had been doing
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