My dear classmates,
One Possible Version:
My dear classmates,
My dreaming university is Guizhou University, the only first-tier school in Guizhou. Although it is not so famous, computer science in this university is one of the best professions in our country. Why do I choose this university as my goal? Firstly I think I have the profession to be interested in. And the most important thing is that I am not so good at all of the subjects and my total score in college entrance examination will just make me admitted to this university. I will work hard especially at maths and English to realize my goal. I hope you,my classmates, will give me a hand and I will also help anybody with physics and chemistry.
That’s all. Thank you!