网上交友(making friends on line)
     these days many students like to make friends on line.most of them think it's interesting to know a stranger through the internet.  as a matter of fact, only a few of them have succeeded in getting a real good friend in this way. most of them have been cheated. some of them have committed crimes with the friends on line. so we should be careful of making friends on line. we'd better pay more attention to our study.