All the guests at the party were dancing and singing happily _____ the electricity was cut off. A. u...
2022-11-23 19:46:49 149次 2016届辽宁省分校高一上学期期末考试英语试卷（解析版） 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
All the guests at the party were dancing and singing happily _____ the electricity was cut off.
A. until B. while C. when D. because
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