61. 任何人都不能进入会议室，除非得到校长的要求。(unless)

62. 雨和雪都不能阻止孩子们上学。(Neither… nor)

63. 众所周知，近几年上海发生了很大的变化。(well known)

64. 自从进入高中以来，我们在学习上取得了很大的进步。(progress)

65. 不管他说什么，做什么，我们都不相信他。(whatever)

66. 电脑在现代科学研究中起着重要的作用。(part)

67. 直到现在为止，我们已经学了大约五年多英语。(up till now)

68. 这支医疗队由五名医生和三名护士组成。(be made up of)

69. 世界是由物质构成的。(consist of)

70. 没有他的及时帮助，我不可能克服那么多困难。(but for)

61. Nobody can be allowed to enter the meeting-room, unless they are invited by the headmaster.

62. Neither rain nor snow can prevent the children from going to school.

63. It is well known to all that great changes have taken place in Shanghai in recent years.

64. We have made great progress in our studies since we entered the high school.

65. Whatever he says or does, we don’t believe him.

66. The computer plays an important part in modern scientific research.

67. Up till now, we have studied English for about more than five years.

68. The medical team is made up of five doctors and three nurses.

69. The world consists of matter.

70. But for his timely help, I couldn’t have overcome so many difficulties.

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