1. 短语填空

struggle with, make use of, set up, dozens of, in use, now that, turn off, put on, turn up, dispose of

1. （1） My car is now , so I can't lend it to you.
3. （2） In the past, garbage freely in this city with no one taking care of it.
5. （3） You can see small children are playing happily in the square.
7. （4） I can't hear the presenter, so please the TV set a little.
9. （5） They began to a tent under the tree and got ready for the night.
11. （6） You ought to your coat before you go out. It's too cold outside.
13. （7） You are clever and you should try your best to your brain to do something great.
15. （8） Mike all the electrical appliances before leaving home.
17. （9） In the primitive society, humans had to nature and wild animals to live on.
19. （10） you are over sixty years old, you'll have to retire this year.