Now he works in the factory ______ his father used to work.
| A．where | B．when |
| C．in which | D．that |
The door burst open and __________，shouting with anger.
| A．rushing in a crowd | B．in rushing a crowd |
| C．in rushed a crowd | D．in did a crowd rush |
After __________ the old man, the doctor suggested that he __________ a bad cold.
| A．examining; should catch | B．examined; had caught |
| C．examining; had caught | D．examined; catch |
Seeing the terrible scene, many problems crowded __________ my mind.
| A．about | B．out |
| C．up | D．in |
As is known, we Chinese people are __________ to win the battle against the present severe drought under the leadership of the Party.
| A．willing | B．alert |
| C．allergic | D．bound |
You should understand the traffic rule by now. We have had it __________ often enough.
| A．explaining | B．to explain |
| C．explain | D．explained |