—Can I come to ask for some advice at any time?
— Yes, of course. _______
| A．If you’re convenient. | B．At your convenience. |
| C．Don’t worry. | D．Don’t mention it. |
In my opinion，keeping dogs should not be banned，but________to certain areas.
| A．limited | B．limiting |
| C．to limit | D．to be limited |
Practising Chinese kung fu can not only________one’s strength，but also develop one’s character.
| A．bring up | B．take up |
| C．build up | D．pull up |
As we all know，practicing Yoga________our health；that is to say，our health can________it.
| A．benefits to；benefit |
| B．benefits；benefit from |
| C．benefits from；benefit |
| D．benefits；are benefited from |
A large sum of money has been raised for the________of the poorlyeducated children in the mountainous districts.
| A．profit | B．favour |
| C．advantage | D．benefit |
—Is there any________to the time that I can stay here?
—Yes，you must leave here before he comes back.
| A．number | B．length |
| C．limit | D．matter |