问题
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
B:broke up
C:broke out
D:broke down
正确答案是：
同类题型
Why didn’t you buy any bread–Sorry, I _____.
TheEnglish spoken in the United States is only slightly different from ___ spokenin England
Don’t forget _________ the light before you leave a room
wice, the postman refused to deliverour letters unless we chained our dog.
Don’t worry, Mum. The doctor said it was only theflu.—____! I’ll tell Dad there’s nothing serious.