Look, the old man who is playing _______ guitar is ______ university teacher.
| A．the ； an | B．/； an |
| C．the； a | D．/ ； a |
You know the boy is ____ playing the piano.
| A．talented in | B．talented at | C．talent in | D．talent at |
We should play a part in ______ the earth.
| A．Save | B．to save | C．saving | D．saved |
The two students practice spoken English______ joining the English club.
| A．by | B．to | C．with | D．for |
You can’t get good grades______ you study hard.
| A．when | B．because | C．unless | D．that |
-I can’t decide______. – You mean the red one or the blue one?
| A．how to go there | B．who to go with | C．where to visit | D．which to choose |