高一的英语短文改错,在线等!急用啊!先谢谢各位了!

高一的英语短文改错,在线等!急用啊!先谢谢各位了!
When father bought me a computer for a birthday present in last year, I felt very excited. As we all know, computers are getting more usefully nowadays. Much informations can be stored in it. We can learn what has lately happened in the world on the Internet. People had to do lots of work which was very danger. Now, computers can do it instead. When an exams is come, I do exercises on my computer. Then it will correct them but tell me the right answer. It is novenient, for me to prepare for the exam than before. The computer have become a real friend of mine.
改错的时候，要把哪一句的哪个单词，写清楚，解释的话，就不用了！谢谢大家哇！！！！！急用啊！！！在线等！！！谢谢！！！！！！！！！