Change into passive voice. [ Chuyển đổi các câu sau thành dạng bị động ] { giải thích nữa ạ} 

1. She fell into water because somebody pushed her.

2. What ought we to do about this?

3. It is time they brought the cows in.

4. What questions did the examiner set?

5. Somebody must do something for these poor men.

6. Nobody has made mistakes.

7. Nobody has answered my question properly.

8. Somebody has brought this child up badly.

9. The teacher promised Jane a prize if she worked well.

10. Nobody has ever spoken to me like that before.

11. I hate people looking at me.

12. Teachers should make lessons more interesting for school children.

13. I’d like someone to read to me.

14. We shall lock the house up for summer and the old gardener will look after it.

15. People say tortoises live longer than elephants.

16. One cannot eat an orange if nobody has peeled it.

17. Don’t let the others see you.

18. Did anybody ever teach you how to behave?

19. It surprised me to hear someone had robbed you.

20. People ought to tell us how much they expect of us.