I my homework while my mother was reading a book last night.
A. did
B. do
C. was doing
D. were doing
I my homework while my mother was reading a book last night.A. didB. doC. was doingD. were
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解决时间 2021-01-03 13:25
- 提问者网友：战魂
- 2021-01-02 17:39
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- 五星知识达人网友：举杯邀酒敬孤独
- 2021-01-02 19:11
A. didB. do(答案→)C. was doingD. were doing解析：句意：昨晚当我的母亲正在读书时，我正在做作业。While引导时间状语从句时，强调动作的同时发生，结合语境可知主句描述的是过去正在进行的动作，句子主语是I，故助动词用am的过去时态was，选C。
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- 1楼网友：往事隔山水
- 2021-01-02 20:34
对的，就是这个意思
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