The woman was about to open the door ______ she heard a strange sound from inside. A. as B. while C....
2022-10-01 04:01:47 33次 内蒙古2016-2017学年高一下学期期中考试英语试卷 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
The woman was about to open the door ______ she heard a strange sound from inside.
A. as B. while
C. when D. then
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