Who listens , Tom, Jack or Bill?
| A．the most carefully | B．more carefully |
| C．the most careful | D．more careful |
The Greens used to live in London and now they________in Beijing．
| A．used to live |
| B．are used to live |
| C．are used to living |
| D．are used for living |
—What’s the matter________your computer?
—It doesn’t work．
| A．about |
| B．for |
| C．on |
| D．with |
The problem is________difficult that nobody can work it out．
| A．such |
| B．very |
| C．so |
| D．pretty |
—Smoking is bad for your health．
—You’re right．I decide to________．
| A．take it down |
| B．find it out |
| C．turn it off |
| D．give it up |
—How did he use to go to school?
—By bike．But now he’s used to________to school．
| A．walked |
| B．walks |
| C．walk |
| D．walking |