He commanded that the students ______the classroom before he returned.
| A．didn’t leave | B．wouldn’t leave | C．not leave | D．couldn’t leave |
As we all know,________, the pollution will get worse and worse.
| A．not if carefully dealt with |
| B．until not carefully dealt with |
| C．if not carefully dealt with |
| D．when not carefully dealt with |
There was a fierce debate about _____we should go on with experiments on creating new life.
| A．which | B．whether | C．that | D．What |
----The boy was so hungry that he ate up the whole cake!
----Oh, he was more _____than hungry.
| A．greedy. | B．considerate | C．generous. | D．athletic . |
The river and lakes nearby dried up and some of the villagers set off ____drinking water.
| A．in memory of | B．in honor of |
| C．in charge of | D．in search of |
—I hope you don’t mind my turning on the heater.
| A．Yes, I don’t | B．That’s right |
| C．Not in the least | D．Never mind. |