问题
He had to pause from time to time to wipe the sweat from his forehead, because the airconditioningsystem ________. [ ]
A: broke in
B: broke up
C: broke out
D: broke down
B: broke up
C: broke out
D: broke down
正确答案是：
同类题型
_____ and happy, Tony stood up and accepted the prize. [ ]
Mum, could you buy me a dress like this— OK, we can buy _____ one than this, but _______ this.
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