欧美日韩黄网欧美日韩日B片|二区无码视频网站|欧美AAAA小视频|久久99爱视频播放|日本久久成人免费视频|性交黄色毛片特黄色性交毛片|91久久伊人日韩插穴|国产三级A片电影网站|亚州无码成人激情视频|国产又黄又粗又猛又爽的

    ―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. 擔(dān)心___________

12. 逃避_______ 

9. 解決問題___________

10. 有很多經(jīng)驗(yàn)___________

7. 犯錯(cuò)誤___________

8. 細(xì)心___________

5. 在某方面有困難___________ 

6. 害怕做某事___________

3. 接受教育___________

4. 上大學(xué)___________

1. 周游世界___________

2. 賺大錢___________