试题 试卷
题型：单选题 题类：常考题 难易度：普通
外研（新标准）版2019-2020学年初中英语八年级上册Module 4 自主检测
—I didn't go to bed ________ 12 o'clock last night because there was too much homework.
—Yes, when we cross the street we must wait ________ the traffic lights turn green.
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