Did she do her homework last night?(用at seven o'clock last night代替last night)

Did she do her homework last night?(用at seven o'clock last night代替last night)
解释为什么要这样改
英语人气:768 ℃时间:2019-11-02 03:44:40
优质解答
应该是:
Was she doing her homework at seven o'clock last night?
昨天晚上七点她在做作业吗?
at seven o'clock last night 昨天晚上七点,是一个时间点
所以在那个点应该是正在做什么
所以用过去进行时
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