They began to consider what use could ___ the natural resources（资源）.
| A．be made from | B．be made of |
| C．be made up of | D．be made into |
We tried to find a table for seven, but they were all _______.
| A．run out | B．taken up | C．used up | D．picked up |
In winter, it is dangerous to go to school with snow ______the ground.
| A．cover | B．to cover | C．covering | D．covered |
_______ late you are, we will wait for you to come to have dinner.
| A．Whenever | B．Whatever | C．However | D．Wherever |
_______ with her sister, Mary is even more hardworking and better at her lessons.
| A．Compare | B．To compare | C．Comparing | D．Compared |
Most of the people attending the meeting are not _______ the project, for it costs too much.
| A．in favor of | B．in case of | C．instead of | D．in response to |