句型转换。(每空1分，共25分)

1.Kate is the oldest girl in our class.(改为同义句)

Kate is than in our class.

2.This bag is 90 yuan. That bag is 70 yuan.(改为同义句)

This bag is than that one.

3.He is cleverer than the other two.(改为同义句)

He is the three.

4.I am less careful than Ma Xueru.(改为同义句)

Ma Xueru is than I am.

5.I don’t think Maths is as interesting as English.(改为同义句)

I think English 　　　　　 　　　　　 　　　　　 Maths.

6.Wangxin’s mother often listens to her children’s problems.(改为一般疑问句)

Wangxin’s mother often to her children’s problems?

7.Liu Xiaowei went to see a friend yesterday afternoon.(对划线部分提问)

Liu Xiaowei yesterday afternoon？

8.Xu Xiya wants to be a doctor when she grows up.(对划线部分提问)

Xu Xiya when she grows up?

No air means death．Though we       see it，there is air around us.       air is everywhere and it gives life to every living thing．Without it we can’t live．Bad air makes people       ．We must have fresh(新鲜)       to keep us in good health．
In the city there are a lot of people and there are too many         running on the road．The gas(气体) which the car sends out(排放) is made up of(组成) bad gases．Every day we breathe it in and     ．This makes us        sick． So people should        door as much as they can．There are many factories，too．From the chimneys of these factories，we get the smoke usually in black color．This kind of smoke does harm         our health．So in order to(为了) keep us      ，we have to go out to the countryside to breathe more fresh air．Or we can go up hills to get more fresh air．