﹣Mike，what were your parents doing at 8：00 last night？ ﹣My mother was reading ____ my father was pla...
2022-12-02 04:40:44 137次 2016届湖北省鄂州四校九年级下学期第一次联考英语试卷（解析版） 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
﹣Mike，what were your parents doing at 8：00 last night？
﹣My mother was reading ____ my father was playing computer games．
A．while B．when
C．unless D．as long as
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