18. Do you know how to ________ ________ _______ (实施急救) if someone is bitten by a snake?

17. He suddenly ________ _________ (生病) last week and _______ ________ ______ ________ (由于疾病) he didn’t attend this important meeting.

16. I’m afraid it will rain tomorrow. ______ _______ (假如下雨的话), we won’t be able to hold our football match.

15. A: When nobody could find any, his father got some tea towels and tape from their house.

　 B: When nobody could ________ _________ ________ _______ any, his father got some tea towels and tape from their house.

C. 完成句子

14. A: Take clothing off the burned area unless it is stuck to the burn.

　 B: Take clothing off the burned area if ______ ______ ______ stuck to the burn.

13. A: I’m proud of what I did.

　 B: I ________ _________ in what I did.

12. A: It prevents your body from losing water.

　 B: It _______ your body _______ losing water.

11. A: Did anyone perform first aid?

　 B: Did any one _______ _______ first aid?

10. When you get injuried, you can slow the bleeding by applying p__________ to the the wound.

B. 句型转换

9. There is a k___________ on the stove and the water in it is boiling.