— The teacher asked us ________________
A. What the bad effect of pollution are.
B. What were the bad effect of pollution.
C. What the bad effect of pollution were.
Ten years ago _______ only one building in our school. And in 10 years, _______ five buildings in our school.
| A．there will be; there are | B．there was; there are |
| C．there was; there will be | D．there will be; there was |
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 |