问题
选择题
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
答案
答案：D
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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
答案：D