This is the main use that the scientists make _________ of natural resources.
| A．it | B．which | C．use | D．/ |
All the traveling ______ are paid by the company if you travel on business.
| A．charges | B．money | C．prices | D．expenses |
Not until yesterday ______ anything about the project that will be completed soon.
| A．did I learn | B．have I learnt | C．I learnt | D．that I learnt |
There me two maps on the wall: one is a map of China, and ______ is a map of the world.
| A．other | B．another | C．the other | D．the others |
The conference ______ in Beijing next week is bound to be a great success.
| A．holding | B．being held | C．to hold | D．to be held |
This problem is ______ his ability and 1 don't think he can solve it.
| A．to | B．in | C．beyond | D．under |