Whatyouat nine yesterday morning?A. have, doneB. did, doC. were, doingD. do, do

发布时间：2020-08-21 06:48:41

What    you    at nine yesterday morning?
A. have, done
B. did, do
C. were, doing
D. do, do

网友回答

A. have, done
B. did, do
(答案→)C. were, doing
D. do, do
解析：at nine yesterday，表示过去进行时，故选C
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