15. I'm t______ ， can you give me something to drink？

14. I'm s______ out，I shouldn't study tonight，I need to have a good rest.

9. although 10. grades 11. surfing 12. vegetables 13.less

　　 Unit2

6. habits， healthy 7. Maybe 8. different，differences

1. exercises 2.programs 3. hardly 4.twice 5. health

13. My mother has a healthy lifestyle，she eats l______　 junk food but more vegetables. 　　 　　 参考答案：

12. Eating a lot of v______　 and fruit help people keep in good health.

11. Some students like s______　 the Internet.

10.I got good g______　 with the help of my English teacher last term(学期)。

9. My grandfather is still healthy，a______　 he is over 80 years old.