He had to pause from time to time to wipe the sweat from his forehead, because the air-conditioning ...
2022-11-19 03:41:25 120次 2015届浙江省温州市十校联合体高二下学期期中联考英语试卷（解析版） 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
He had to pause from time to time to wipe the sweat from his forehead, because the air-conditioning system ____.
A. broke in B. broke up C. broke out D. broke down
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