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 |
推荐套卷
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 |