题目内容
The lecture was going well until the projector(
幻灯机)_________ and put the professor off his stride.[ ]
A.
broke down
B.
broke up
C.
broke away
D.
broke off
答案:A
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题目内容
The lecture was going well until the projector(
幻灯机)_________ and put the professor off his stride.broke down
broke up
broke away
broke off