1 . Air pollution ________ be a very serious environmental problem, but now it has been improved.

A．used to

B．is used for

C．was used to

D．was used for

2 . He ________ make scissors in this factory when he was young and scissors are often ________ cutting sheet metal (金属片) .

A．got used to; used as

B．used to; used for

C．used to; used as

D．was used to; used to

3 . Wind and sun can be used for ________ electricity（电）. （produce）

4 . 这艘中国制造的轮船是用来干什么的?
____________________________________________________

5 . —I ________ drive on the right in China. While now I must drive on the left in England.
—Well, practice more and you will ________ it.

A．used to; be used for

B．am used to; used to

C．used to; get used to

6 . 根据每小题所提供的图画情景和提示词，写出一个与图画情景相符的句子。
1. used, for _________________________
2. much, than _________________________
3. Peter, interested _________________________
4. spend, every day _________________________
5. if, look up _________________________

7 . for,     they,     be,     drinking,     used,     could,
________________________________.

8 . People use pans for cooking.（改为被动语态）
Pans ________ ________ ________ cooking by people.

9 . It’s ________ (use) for scooping really cold ice-cream.

10 . What ________ electric slippers ________ (use) for?