根据短文内容和首字母提示完成单词，并将单词完整的写在后面的横线上。

We live in the “c　 83　 　age”. Just 41 years ago，computers couldn't do much. They were very big and e　 84　 . They used a lot of energy (能量).Only a few people were interested in them. Today computers are smaller and c　 85　 . They can do much difficult w　 86　 　.

　　 Computers become important for many reasons (原因).They work f　 87　 　than man and make few mistakes. They can “remember” much information. A computer can do millions(百万) of problems in a few seconds. A person might need years to work o　 88　 　so many problems.

People now use computers in every k　 89　 　of work.. Computers are very useful and the use of computers is growing. More computers mean more jobs for people, because people need to run(操作)and mend(修理) them. Would you like to learn h　 90　 　to run a computer?

83. 　　　　　　84. 　　　　　　85. 　　　　　　86. 　　　　　　87. 　　　　　　

88. 　　　　　　89. 　　　　　　90. 　　　　　　

82. His sister is running very fast.　 (改为感叹句)

　　　　 　　　　　　his sister is running！

81. I think the dress is in style.　 (改为否定句)

I 　　　　　think the dress 　　　　　in style.

80. There will be less pollution in the future.　 (改为反意疑问句)

There will be less pollution in the future， 　　　　　　　　　　？

79. We don’t know when we will leave the city.　 (改为同义句)

We don’t know 　　　　　　　　　　　　　　　the city.

78. The girl was shopping when the accident happened．　 (对划线部分提问)

　 　　　　　　　　　　the girl 　　　　　when the accident happened?

77. “Could I copy your homework?” He asked me.　 (改为间接引语)

He asked me 　　　　　　　　　　　　　　　copy　　　　 　homework.

76. The yellow pants are 　　　　　　(cheap) of all.

75. I like swimming because it can make me 　　　　　　(keep) fit.

74. The children enjoyed 　　　　　　(they) on the Great Wall.