Using computer

I think computer is useful for me. I have to some reports as homework. Computer is easy to write them. I haven't use erasers. It is also good for nature! I have an American friend who lives in America. I sometimes send letter to her, but almost send e-mails to her. "Long time no see!" "How are you?" She received e-mails, what she happened recently. I can contact her quickly. Also, it is good for shopping. I can buy clothes I don't go out. Using computer is good for me, but if I use computer long time, my eyes are tired.(101 words)