29．His humorous closing speech was a welcome addition to the ______dull meeting．
| A．therefore | B．meanwhile | C．otherwise | D．Thus |
The policeman came up to the lonely house with the door __________，__________there for a while and then entered it.
| A．open；to stand | B．opening；stood |
| C．open；stood | D．opened；standing |
The boy often gives a satisfactory answer to the teacher’s question，__________ just a minute.
So he’s usually the teacher’s pet.
| A．thought | B．having thought |
| C．and to think | D．thinking |
A doctor can expect__________at any hour of the day or night.
| A．calling | B．to call | C．being called | D．to be called |
We found the students seated at tables and had their eyes__________on the scene of the launch of Shenzhou V spaceship.
| A．fixed | B．fix | C．fixing | D．to fix |
When we got back from the cinema，we found the lamp__________but the door __________.
| A．being on；shut | B．burning；shutting |
| C．burning；shut | D．on；shutting |