Feelings after I work

I have been graduated at in June this year. It is not so good when tell people I am not a student anymore. My I work is about in airline ticketing systems. People who want to sell tickets in China must use our system. You could call that a monopoly. To be specific, we solve their problems when they have (them/problems). It's not so very easy to explain my job.
I live in Beijing now. I have a roommate who is a nice girl. We are in a good relationship. But I know she will move to another city in the near future. I just don't like been being apart.
It is has been a while that I wirte a since I have written an article. I feel like I give have forgotten everything that I have learnt. all my knowledge back to my teacher. I should parctice more.

Its  = possession 

It's = It is  

example:  The dog was looking for its toy. It's a large toy.