31．With the cell phone available, I can do whatever I want to do and still______in touch with my parents and friends．
| A．stay | B．to stay | C．staying | D．Stayed |
________ he stayed in Germany for half a year and we 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 |
Do you think a person ________ is cleverer than one ________?
| A．with debt; without debt |
| B．under debt; up debt |
| C．in debt; out of debt |
| D．on debt; over debt |
Nancy is not coming tonight. But she ________.
| A．promises |
| B．promised |
| C．will promise |
| D．had promised |
—Do you think you could drive me to the airport?
—________
| A．It doesn’t matter. |
| B．No, I don’t. |
| C．I’ll be there on time. |
| D．Sure. Why not? |
You ________ wake me up when you come in.
| A．have better not |
| B．had better not |
| C．had better to |
| D．had better not to |