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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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 |