21. My father who has gone to abroad is a doctor.

22. Mrs Kim Anh, whom you talked with yesterday, will be our history teacher next semester.

23. The watch which is in the bathroom belongs to lam.

24. Do you know the new student whose nam I can't remember?

25. Mary, who didn't hear her phone, is a bit deaf. 

26. Tomorrow we will meet peter, who has brother and one sister.

27. We are talking to vietnam, which has  a population of million people.

28. I should phone the man whose car I borrowed yesterday.

29. She can't speak english, which is a big disadvantage.

30. I am staying with henry, whose father works in a bank.

31. Do you remember mrs lan, who taught us history?

32. The museum which our class visited last weekend was built.

33. The man whom I told you about works in athe hospital.

34. Do you like the person who sits next to you?

35. The house which my father bought last year costs a lot of money.

36. We are visiting the children whose parents died in the storm.

37. Ms sister who was trained to be a sewer is rather childish.

38. Colin told me about his new job which he enjoys very much.

39. We know a lot of people who live in london.

40. We know her grandparents who live in  london.

41. We met  some people whose car had broken down.

42. We stayed at the cau vong hotel, which nam recommended to us.