There are many websites，________you can find almost all the necessary information.
| A．where | B．from where | C．when | D．from when |
This condition __________ urgent treatment.
这种情况得紧急处理。
__________ in the school regulations that students should not wear long hair or jewels.
| A．It is required |
| B．What is required |
| C．What requires |
| D．It required |
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 |