The manager of the hotel was waiting at the gate _______ the guests arrived. A. while B. when C. unl...
2022-10-23 09:07:00 66次 江苏省宿迁市2018年中考英语试卷 单选题 反馈错误 加入收藏 正确率 : 100%
题目内容：
The manager of the hotel was waiting at the gate _______ the guests arrived.
A. while B. when C. unless D. after
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