Giúp em với ạ em camon 🙆

11. The teacher said to his students that they had to learn harder for the exam.

12. He told the liftman to take him up to the $33^{rd}$ floor.

13. Mother told the boy not to stay up late.

14. The teacher ordered the hold class to keep cilent in the class

15. They told me not to drive too fast.

16. He asked me if I could lend him my dictionary.

17. The man told me to tell him the way to the post office.

18. The teacher ordered us not to put out legs on the table.

19. He asked Linh if she could open the door.

20. Mr Brown asked Ann to give him some food.

21. I told her not to make noise in class.

22. Peter asked Tuan if he could help him.