1. (2016九上·龙华期中) 选用方框内所给的词的适当形式填空，每个词只能填一次。

use   heavy   obey   five   breathe

1. （1） May is the month of a year.

3. （2） The book is very . I want to buy it.

5. （3） What heavy smoke! It's hard for me .

7. （4） It snowed yesterday so that we couldn't go to school.

9. （5） If everyone the traffic rules, there will be fewer accidents.