Only when something gets lost _____________.
| A．can you realize how important it is to you |
| B．how important you can realize it is to you |
| C．you can realize how important it is to you |
| D．can you realize how important is it to you |
He finally refused to ________ his plan of travelling the world.
| A．give off | B．give up | C．give to | D．give in |
I hope that ________ that I’ve been able to do is of some use to you.
| A．a few | B．the few | C．a little | D．the little |
We all admired her ______ the way she saved the children from the fire.
| A．to | B．for | C．in | D．at |
We should not ________ economic growth that will harm the environment.
| A．solve | B．promote | C．challenge | D．reduce |
---- Do you surf the Internet a lot？
---- Well,_______, I’m too busy with work to surf the Net.
| A．all right | B．I have no idea | C．at last | D．to tell you the truth |