1）要求下学期换一个新房间，
2）解释原因，
3）要求单间。
Dear Sir or Madam,
I am writing to inform you that I wish to move into a new room next semester. I would prefer a single room, as I find the present sharing arrangement inconvenient.
I must explain that the reason for my dissatisfaction is my roommate’s inconsiderate behavior. For one thing, his friends are constantly visiting him; for another, he regularly holds noisy parties. In these circumstances, I find it difficult to concentrate on my studies, and I am falling behind in my assignments.
I am sure you will agree that the only solution is for me to move into a room of my own. Therefore, I would be grateful if you could find a single room for me, preferably not in the same building but as near to the college campus as possible.
Yours sincerely,
Li Ming
1.
2.
3.
4.
5.
6.
7.
8.