We'll supply you with the products only __________ you prove your ability of payment.
| A．that | B．on condition |
| C．on that | D．on condition that |
You should try not to get __________ in the trouble between them.
| A．lost |
| B．involved |
| C．absorbed |
| D．trapped |
Lang Lang appeared at Beijing Olympic opening ceremony （开幕式），__________ in front of audience from all over the world.
| A．performing |
| B．performed |
| C．to perform |
| D．perform |
The girl has a wide __________ of hobbies. Not only is she fond of writing and painting, but she is also an expert in weaving and knitting（编织）.
| A．type |
| B．deal |
| C．kind |
| D．variety |
In a sport's team, each player has a clear role, and there are few occasions __________ members are confused or uncertain of their roles.
| A．which |
| B．that |
| C．when |
| D．how |
Please __________ the money and I'm sure it will __________ more than 1，000 yuan.
| A．add; add up |
| B．add up; add up |
| C．add up; add up to |
| D．add to; add up |