62. The book which brought for me by my brother cost a lot of money.

61. I don’t think he can do the work well, can’t he?

60. They may go to London, but they were not certain .

59. Having been ill for a long time, so she fell behind her classmates.

58. The recorder needs be repaired before it can be used.

57. I have three letters to be answer this afternoon.

56. My brother has turned an engineer for two years.

55. Not had studied his lessons well, he failed in the exam.

54. Being Sunday today, we don’t have to work.

53. There having no buses, we had to walk home.