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He had to pause from time to time to wipe the sweat from his forehead, because t

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He had to pause from time to time to wipe the sweat from his forehead, because t

He had to pause from time to time to wipe the sweat from his forehead, because the air-conditioning system ____.

A.broke inB.broke upC.broke outD.broke down

试题答案

D

解析试题