—Was it under the tree _______ you were away talking to a friend?
—Sure. But when I got back there, the bike was gone.
| A．that | B．where | C．which | D．while |
Teachers required that all the students __________ their homework all alone.
| A．must finish |
| B．would finish |
| C．had to finish |
| D．finish |
We can see monuments here and there. Those who have made a great __________ to human beings and society will never be forgotten.
| A．advance |
| B．progress |
| C．contribution |
| D．achievement |
At proper horse races everyone has already studied the form of the horse __________.
| A．behind time |
| B．in progress |
| C．in advance |
| D．in time |
Some people always take seriously the __________ of the complete globe end in the near future.
| A．celebration |
| B．production |
| C．prediction |
| D．permission |
What do you think of the so called expert's __________ that the American debt will continue to be expanded?
| A．prediction |
| B．combination |
| C．possession |
| D．invitation |