Internet haveThe internet has become part of our daily life.
... good opening.... pay attention to the grammar correction I made there.
It existedexists everywhere; office, home and even your cell phone.
... you have to keep this sentence in present tense.
We cannot avoid it in our daily life. Student needs to search information online. Office clerk needs Internet to check and send email.
... These lines do not provide any meaningful ideas to back your topic; instead they sound like you are going off track and repeating the same thing. Tell something that would set up a link with your topic;
The internet connects the entire globe instantly by fascilitating speedy access to information and people irrespective of any geographical or time barriers.