The government has taken some measures to prevent more trees from _____.
| A．cutting down | B．cut down. |
| C．being cut down | D．been cut down |
I don’t know whether you happen ____ that he has been away for two months．
| A．to be heard | B．to be hearing | C．to hear | D．to have heard |
When the children are busy playing their games．They had better be _____
| A．let out | B．left out | C．left alone | D．left away |
The boy made ____ fun of me, so I became angry ____ him．
| A．a; with | B．/; with | C．a ; about | D．the; about |
There are many new bikes ____ for you in the shop．I think you can buy one that you like most．
| A．to be chosen | B．to choose from | C．to choose | D．for choosing |
The two sportsmen congratulated each other ____ winning the match by shaking hands．
| A．with | B．on | C．in | D．to |