40. Dover Castle, which was built by the Normans, is very impressive building.

41. The house was built more than 100 hundreds years ago. 

42. The Lunar New Year is celebrated around January or February by Vietnamese people. 

43. Our desk was prepared during the weekend. 

44. The meeting is going to be held on the weekend. 

45. She asked Lan what kind of books she wanted to buy. 

46. I bought myself some goods, new clothes for my new job. 

47. If he feels better, he will come to class. 

48. don't have 

49. doesn't know 

50. Mary, who works in a local authority, sings very well. 

51. He can't compose a song although he really wants to do it. 

52. canceled, has been 

53. to stand 

54. The teacher asked me what aspects of learning English i found most difficult.

Câu 43 bn ghi là prepar thiếu chữ e nhé!

Sửa lại là prepare

Câu 48. They not have a heater.

Ko phải là not have mà là don't have nhé!

Câu 49 cũng thế! Bn sửa lại là doesn't have nha!

Câu g) Tự nhiên canceled là quá khứ 

Mà câu because the weather is bad.

Phải là was nhé bn.

Còn câu dưới, She asked me standed in the corner of the room.

Standed? Bn chuyển thì quá khứ đúng rồi nhưng quá khứ của stand là stood.

                                    *Học tốt*