—What’s the matter________your younger sister?
—She has a cough．
| A．for |
| B．at |
| C．with |
| D．on |
- I'm going to the post office.
-_______ you're there , can you get me some stamps?
| A．As | B．While |
| C．Because | D．lf |
- You seem familiar with Mr. John?
-Of course, we_______ together for three years in the 1990s.
| A．have worked | B．were working |
| C．are working | D．worked |
The new law says that people_______ drive after drinking wine.
| A．wouldn't | B．needn't |
| C．won't | D．mustn't |
You will fall behind others_______ you work hard.
| A．if | B．unless |
| C．though | D．since |
-I don't know about you, but I'm sick and tired of this weather.
-_______. I can't stand all this rain.
| A．I don't care | B．It's hard to say |
| C．So am I | D．I hope not |