12. She said that students at secondary school and high school rarely sang English songs.

13. Nga told Mai not to feed the chicken.

14. They said that their teacher sometimes explained the difficult lesson.

15. My teacher of Geographi says that the Earth moves around the Sun.

16. Nam said that he was going his homework then.

17. He asked me if he could meet me after class.

18. Our teacher told us not to talk in class.

19. The policeman told me to show him my driving license.

20. The man told me not to touch that button or i'll get an electric shock.

21. She asked me if i liked playing soccer.