―Science is so difficult ！ 

―I think you should keep on___________  hard.

A. study            B. to study

      C. studying      D. to studying 

―I suppose we'll go to plant trees next week. ！

―Terrific! I'd like to_________  you.

A. visit            B. join

C. follow            D. meet

I'm a student. I live near my school. I'm_______ from Monday to Friday.

A. at school            B. at the school

C.not at school       D. not at the school

6. This person doesn't need to be an expert like _________(he).

11. 担心___________

12. 逃避_______ 

9. 解决问题___________

10. 有很多经验___________

7. 犯错误___________

8. 细心___________

5. 在某方面有困难___________ 

6. 害怕做某事___________

3. 接受教育___________

4. 上大学___________

1. 周游世界___________

2. 赚大钱___________