Most people are________building a paper factory near here．They are worried the river will get polluted．
| A．for | B．with | C．against | D．beyond |
Do you prefer _______?
| A．skate | B．skates | C．skating | D．skated |
—Mr. Hu, can you tell us how to learn swimming well?
—Sure. But remember we can learn nothing well _______ hard work.
| A．with | B．after | C．without | D．at |
You _______ wash your hands before meals. It is good for your health.
| A．may | B．can | C．have to | D．must |
It’s hot here. Please keep the windows _______.
| A．closing | B．open | C．closed | D．opened |
Sally sings pretty _______ and she is also _______ at dancing.
| A．well; well | B．good; good |
| C．good; well | D．well; good |