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11. He told her that she was his friend.
12. Johnny told his mother that he didn't know how to do that exercise.
13. My brother advised me not to come back before one o'clock.
14. Mrs Brown told her daughter to cook it in butter.
15. The pupils asked their teacher to give them better marks.
17. Alice, whose mother died last year, is my friend.
18. The boy who threw that stone will be punished.
19. Ann, who lives next door, is very friendly.
20. The man whom you met at the party last night is a famous actor.
21. There are some words which are very difficult to translate.
22. I've found the book which I was looking for this morning.
23. Is that the car which you want to buy?

24. Sandra, whom you were talking to, works in advertising. 
25. The little girl who sat next to me on the coach ate sweets the whole way.
26. Lan, whose tape recorder was stolen, is a journalist.

Mình trình bày trong hình nhé >~<