For some time the expert __________ people of the health risks caused by passive smoking. He says he won't stop until all the smokers around him decide to quit smoking.
| A．is warned | B．is warning | C．has been warning | D．has been warned |
Please do me a favor—__________ my friend Mr. Smith to Youth Theater at 7:30 tonight.
| A．to invite |
| B．inviting |
| C．invite |
| D．invited |
Bring the flowers into a warm room __________ they'll soon open.
| A．or |
| B．and |
| C．but |
| D．for |
—What do you think of this film?
—Very bad. __________
| A．Nothing could be worse. |
| B．Nothing could be better. |
| C．I like it a little. |
| D．You just couldn't find a better one. |
—Shall I give you a ride as you live so far away?
—Thank you. __________
| A．It couldn't be better. |
| B．Of course you can. |
| C．If you like. |
| D．It's up to you. |
—Why don't we just leave it until tomorrow?
—__________ I'm dead tired today.
| A．Forget it. |
| B．I couldn't agree more. |
| C．It all depends. |
| D．Don't mention it. |