【答案解析】Dear Sir or Madam,
I am writing to express dissatisfaction regarding accommodation. I would prefer to move into a single room next semester, 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.
To solve this difficulty, I hope to draw the attention of the authorities concerned. I am sure you will agree that the only solution for me is to move into a room of my own. Therefore, I would be grateful ff 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,
Zhang Wei