66. ____ ____ ______ ______(人们相信) greenhouse gases are the main causes of global warming.

67. The house which_______ _______ ______ ____________ (状况欠佳) will be repaired soon.

68. 他的成功应该归功于他的努力学习。

He _______ ________ _________ ________ his hard study.

69. You are likely to make great progress in your study. (用it作形式主语改写句子)

  _____________________________________________________________________.

70. He did not return to his hometown until 2008. (强调划线部分)

  _____________________________________________________________________.

71. We can’t accept the truth. She is the mother of six children. (用同位语从句合并句子)

______________________________________________________________________.

81. 人们开始较少关注宗教主题而采取一种更人性化的生活态度。

People began to ________________ less ______________ religious themes and ______________ a more humanistic _______________ to life.

82. 童谣不一定有什么意义，甚至看起来自相矛盾，但是它们容易学，也容易背诵。

The poems may not _______________ ______________ and even _______________ ___________________, but they are easy to learn and recite.

83. 我知道，吸烟容易戒烟难。你知道，当我还是一个十几岁的孩子的时候，我也吸过烟，而且还上了瘾。

I know how easy it is to begin smoking and how ______________ it is to stop. You see, during ________________ I also smoked and became _______________ _______________ cigarettes.

84. 所有科学家赞同这种观点，人们为了生产能量而燃烧化石燃料（如煤、天然气和石油等），从而引起了地球温度的升高。

All scientists ________________ _______________ the view that the increase in the earth's temperature is ______________ _______________ the burning of fossil fuels like coal, natural gas and oil to produce energy.

85. 收集和评估了这些信息之后，我就帮助其他科学家一起预测下次火山熔岩将往何处流，流速是多少。

________________ _________________ and __________________ the information, I help other scientists to ________________ where lava from the volcano will flow next and how fast.

自主招生政策利大于弊吗？
最近，自主招生很受学生家长的欢迎，也引起很多讨论。请你根据下表，并结合自己的看法，写一篇短文：

The __________(女主人) made her guests comfortable.

 古人云：“笑福开来。”微笑是和谐的开始，微笑是沟通的通行证，微笑可以冰释前嫌，微笑可以舒缓窘迫，微笑可以感化灵魂，微笑可以增强自信，微笑可以增添魅力，微笑可以……

请你以微笑为主题写一篇英语短文，题目自拟。

注意：1．对所提示内容不要简单翻译，可以适当发挥；

2．词数120左右。