We are told ________ everywhere. It’s our duty to keep our school clean.
| A．not to make much noise | B．to throw waste paper |
| C．to draw | D．not to spit |
I think _______ is good for your health.
| A．getting up late | B．drink more milk |
| C．eating more fruits | D．to eat more meat |
Don’t leave your books on the table．Please _______．
| A．take away it | B．take them away |
| C．take away them | D．take it away |
---If there are _______ people driving, there will be _______ air pollution.
---Yes, the air will be fresher.
| A．less; less | B．less; fewer |
| C．few; fewer | D．fewer; less |
While I _______ down the street, I _______ my classmates.
| A．was walking; met | B．walked; met |
| C．was walking; was meeting | D．walked; was meeting |
If it _______ tomorrow morning，we’ll go out for a picnic．
| A．won’t rain | B．doesn’t rain |
| C．isn’t raining | D．isn’t going to rain |