1. 用下列短语的正确形式填空。

protect…against…    prevent…from…    get burnt    take off    choke    carry out    be proud of    iron    present sb. with sth.    heal

1. （1） You have three layers of skin to you diseases, poison and the sun's harmful rays.
3. （2） He his hat and bowed (鞠躬) to us.
5. （3） If your skin , it will be very serious.
7. （4） The skin can your body losing water.
9. （5） I prefer to my shirts while they are still damp.
11. （6） The cut soon over, but it left a scar.
13. （7） She to death on a fish bone.
15. （8） I their success.
17. （9） He was an experiment when I rang him.
19. （10） The town a library.