下面短文中有10处语言错误。请在有错误的地方增加、删除或修改某个单词。
增加：在缺词处加一个漏字符号(∧)，并在其下面写上该加的词。
删除：把多余的词用斜线(＼)划掉。
修改：在错的词下划一横线，并在该词下面写上修改后的词。
注意：1．每处错误及其修改均仅限一词；
2．只允许修改l0处，多者(从第11处起)不计分。
When my father bought me a computer as a birthday gift for me in last year, I felt very excited. As we all know, computers are getting more and more usefully now. Much information can be stored in them. We can also learn that has lately happened in the world in the Internet. In the past, people had to do lots of work which was very dangerous. Now, but, computers can do it instead. When an exam is coming, I often did some exercises on my computer. Then it will correct it and tell me the right answers. In this way it is very convenient（方便） for me to prepare the exam than before. The computer has become my real friend.