题目内容
What ________ you ________ at nine yesterday?
[ ]
A.
were; doing
B.
have; done
C.
do; do
D.
are; doing
答案:A
解析:
解析:
|
表示在过去某一时刻正在做某事,用过去进行时。 |
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题目内容
What ________ you ________ at nine yesterday?
were; doing
have; done
do; do
are; doing
|
表示在过去某一时刻正在做某事,用过去进行时。 |