The roof of the mine ____ as a result of the explosion.
A: dropped in
B: broke down
C: pressed down
D: caved in
A: dropped in
B: broke down
C: pressed down
D: caved in
举一反三
- ____________ and broke it. A: Down fell the coffee cup B: He dropped the coffee cup C: Down was the coffee cup fallen D: The coffee cup fell down
- The driver examined his car carefully lest it ______ on the way. A: breaks down B: broke down C: would break down D: should break down
- The reason (why) I came late (for) the meeting was (because) my car (broke down).() A: why B: for C: because D: broke down
- -- I got to my office on time. --What if your car ______. A: would broken down B: broke down C: breaks down D: had broken down
- The plan (__) just because people were unwilling to cooperate. A: turned downed B: pulled down C: broke down D: put down