1. 用所给词的适当形式填空

1. （1） We should learn to study by (our).

3. （2） It is necessary for us to understand the (important) of health care.

5. （3） Miss Lin didn't feel well, but she still kept on (work).
   

7. （4） The cat's (die) made the girl cry for a long time.
   

9. （5） He had problems (breathe) after running for an hour.

11. （6） (put) on your coat, please. It's cold outside.

13. （7） Do you know the boy (call) Tony? He's new in our school.

15. （8） We are thinking about (go) on a trip, but we are not sure where to go.