The field research will take Joan and Paul about five months; it will be a long time _________ we meet them again.
| A．after | B．before | C．since | D．when |
Stand over there __________ you'll be able to see the oil painting better.
| A．but |
| B．till |
| C．and |
| D．or |
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. |