Giúp mình với

1. A woman who answered the phone told me you were busy. 2. The bus that I take to school every morning is always crowded. 3. Ms. Lan, whom you talked with yesterday, will be our History teacher next semester. 4. We are talking about Viet Nam, whose population is 87 million people. 5. I apologized to the woman whose coffee I spilled. 6. I thanked the woman who had helped me. 7. Mr. Smith, whom I had come to see, said he was too busy to speak to me. 8. The girl who won the race is happy. 9. The people whom we visited yesterday were very nice. 10. The picture at which she was looking was beautiful. 11. I have to call the woman whose umbrella I accidentally picked up. 12. The students who study seriously and methodically will surely be successful in their exam. 13. They asked me lots of questions, most of which I couldn't answer. 14. Jill, who isn't on the phone, makes it difficult to contact her. 15. She told me her address, which I wrote down on a piece of paper. 16. Manchester, where my brother lives, is the largest city in the US. 17. That's the wrong person whom John used to be married to. 18. My dictionary, whose cover is blue, is not very good. 19. He failed the exam, which made his parents disappointed. 20. Tuan, whose uncle is a pilot, has just won the second prize in the English contest. 21. I have sent her two letters, neither of which she has received. 22. The girl who arrived here at 6:30 chatted with him yesterday. 23. The man who spent 15 minutes measuring our kitchen is talking to my father. 24. The architect who designed these flats has moved to HCM City. 25. The young man who rides an expensive motorbike lives in the corner. 26. I'm reading the book that I bought in 1996. 27. We visited the monument that was built a hundred years ago. 28. The boys who are interested in football find it a popular game all over the world. 29. The boy who went abroad to study gave his parents big hugs before he left. 30. Children like to eat ice-cream, which can cause toothache. 31. The lady whom you met at the party last night is a famous writer. 32. Dr. Oley, who is a popular dentist in the city, is our family's dentist. 33. The river that flows through Ho Chi Minh City is the Sai Gon River. 34. The lecturer who gave an interesting talk on TV last night is my uncle. 35. Mr. Phong, who is supposed to be at the meeting, hasn't come yet. 36. Lan, who forgot to turn off the faucet, went back home. 37. The police want to know the hotel where Mr. Foster stayed two weeks ago. 38. The day when she left was rainy. 39. The reason why the president will come to that city hasn't been told yet. 40. Trang couldn't come to the party, which was perfectly true. 41. Oxford University, which is one of the oldest in the world, has many different colleges. 42. Mr. Johnson, who came here only last week, is living next door to us. 43. This student, whose name I can never remember, makes a lot of noise. 44. My girl-friend Daisy, who you took her picture last Sunday, is the teacher's daughter. 45. This is Mary, whose brother you wanted to meet. 46. Miss White, whom your sister saw in the paper, lives next door to us. 47. We usually help Tom, whose family is poor. 48. The man whom the manager wanted to see was away on holiday. 49. This is Mr. Jones, whose son won the championship last year. 50. Charlie Chaplin, whose films amused millions of people in the world, died in 1977. 51. Mary and Margaret, whom you met yesterday, are twins. 52. The teacher with whom we studied last year is Mr. Pike. 53. The problem that we are very interested in has been discussed in class.