People are concerned about the quality of the air they ______.
| A．hear | B．eat | C．drink | D．breathe |
A lot of damage __________ in the snowstorm in China.
| A．are caused |
| B．caused |
| C．has been caused |
| D．have been caused |
__________, the more expensive the camera is, the better its quality is.
| A．General speaking |
| B．Speaking general |
| C．Generally speaking |
| D．Speaking generally |
It __________ that my boyfriend came from the same town as me.
| A．happens |
| B．is happening |
| C．is happened |
| D．happened |
Seeing the enemy, Gary was behaving as though nothing __________.
| A．happened |
| B．had happened |
| C．would happen |
| D．was happening |
It is no good __________ him to see you off.
| A．to expect |
| B．expecting |
| C．of expecting |
| D．for expecting |