He had to pause from time to time to wip
题型:选择题
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
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