— I’m terribly sorry to keep you waiting for so long.
— _______.
| A．Never mind. | B．That’s right. | C．You are welcome. | D．Don’t mention it. |
The car's________ has improved a lot since a new engine has been applied to it．
| A．character | B．performance |
| C．appearance | D．attraction |
How________ you expect to get something in return when you never willingly lend a hand to others?
| A．shall | B．can | C．should | D．dare |
--- Alice is moving to her new apartment next Saturday． --- I would be glad to help her，________ need some help．
| A．if she might | B．if she will |
| C．if she | D．should she |
________that the government can clear up official corruption，we are________ about the future of our country．
| A．Convinced；optimistic | B．Convincing；optimistic |
| C．Convinced；pessimistic | D．Convincing；pessimistic |
General Secretary，Xi Jinping stressed that cross－strait cooperation would be strengthened________ the two sides could agree to oppose Taiwan independence．
| A．unless | B．even if |
| C．as long as | D．until |