Don’t leave your seat ________ all the papers have been collected by the teache
题型：不详难度：来源：
Don’t leave your seat ________ all the papers have been collected by the teacher.| A．after | B．when | | C．since | D．until |
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答案
| D |
解析
试题分析：句意：直到所有的试卷都被老师收起来才能离开你的座位。not…until…直到……才……。根据句意，故选D。 |
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