I really appreciate to drive me home，but I am afraid that I have to finish my work first now.
| A．you to offer | B．it you offer |
| C．your offering | D．this you are offering |
The government has to close those small factories to prevent the water of the river ______.
| A．polluting | B．from polluting | C．being polluted | D．polluted |
He wants to see changes in the company and I am sure he will, ______.
| A．on time | B．at a time | C．at one time | D．in time |
We should try our best to ______ those people after the disaster.
| A．break out | B．cheer on | C．break up | D．cheer up |
_________ he stayed in Germany for half a year and he will go to Germany _________again.
| A．Before long; before long | B．Long before; long before |
| C．Before long; long before | D．Long before; before long |
—Catherine, I have cleaned the room for you.
—Thanks. You_______ it. I could manage it myself.
| A．needn’t do | B．needn’t have done |
| C．mustn’t do | D．shouldn’t have done |