What_____ you ____ when your mother came back? A. are; doing B. were ; doing C. did; do D. did; doin...
2022-11-12 11:34:02 99次 吉林省长春市大学区2016-2017学年八年级下学期第三次月考英语试卷 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
What_____ you ____ when your mother came back?
A. are; doing B. were ; doing C. did; do D. did; doing
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