1 .The Internet is an useful tool and you can do a lot
2.of thing with it .For example ,you can chat with
3.friends online .Some of them lived in another city
4.or even another country .Making friends online gives
5.you a chance to know more people ,and you
6. need to be very carefully about these friends .It is
7.important for you not to give too much information
8. like your phone number and so on .It may be dangerous .
9. Friends on the Internet can never replace
10.your friends in reality ,who are important in your life