The government has taken some measures to solve the shortage of water, but it may be some time __ the situation improves.
| A．since | B．when. | C．unless. | D．before. |
He has made a robot __________ like a dog.
| A．shaped |
| B．shaping |
| C．which shape |
| D．which are shaped |
The children have been playing with my hat and they have knocked it out of __________.
| A．order |
| B．date |
| C．balance |
| D．shape |
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 |