Answer 1

One possible version:
                                            Advantages and Disadvantages of the Internet
     Internet is now coming into our life. It brings us not only a lot of convenience, happiness but also 
troubles. Some students use Internet as a tool to study. They look up the meanings of the words, a
translated form of a sentence, the background of an event or a story, the information of a company
or a famous person, etc. They also read news or send e-mails through it. Internet helps them learn more
and study well.
     On the other hand, some students play games, chat with friends, see the pictures or films even the
unhealthy ones on the Internet the whole day. They are not interested in their subjects. It's very dangerous
for them!
     The Internet's advantages and disadvantages are shown clearly to us. I think we should make good use
of it and stay away from the unhealthy websites.