I_______ my homework at nine o'clock last Sunday morning. A. am doing B. was doing C. do D. did
2022-11-14 02:50:04 70次 2014-2015学年湖南浏阳第一中学高一上学期第一次月考试卷英语试卷（解析版） 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
I_______ my homework at nine o'clock last Sunday morning.
A. am doing B. was doing C. do D. did
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