题目内容：

此题要求改正所给短文中的错误。对标有题号的每一行做出判断；如无错误，在该行右边横线上画一个钩（√）；如有错误（每行只有一个错误），则按下列情况改正：

此行多一个词：把多余的词用斜线（﹨）划掉，在该行右边横线上写出该词并也用斜线划掉。 

此行缺一个词：在缺词处加一个漏字符号（∧），在该行右边横线上写出该加的词。

此行错一个词：在错的词下画一横线，在该行右边横线上写出改正后的词。 

注意：原行没有错的不要改。 

When my father bought me a computer as a birthday gift for               

76. ________

me in last year, I felt very excited. As we all know, computers              

77. ________

are getting more and more usefully now. Much information can             

78. ________

be stored in them. We can also learn that has lately happened                

79. ________

in the world on the Internet. In the past, people had to do lots of              

80. ________

work which was very dangerous. Now, but, computers can do it             

81. ________

instead. When an exam is coming, I often did some exercises              

82. ________

on my computer. Then it will correct it and tell me the right                

83. ________

answers. In this way it is very convenient for me to prepare                 

84. ________

the exam than before. The computer has become my real friend.            

85. ________