【正确答案】Dear Ken,
I heard that you are moving to another dorm room this weekend. It's quite understandable because I know you are going to take the National Entrance Examination for Postgraduate and need to live and study with other graduate students. If you need my help, please call me. I am available at any time.
I won't forget the days we live together. Although you are moving out, I am sure we can still play basketball together every weekend as before.
This new basketball is a gift for you. I hope you'll like it.
Sincerely, Li Ming

【答案解析】 这是一封向室友提供帮助的信件。室友以前跟自己同住一室，因此要写得很随和，非正式，并且要体现亲切感。
第一段说明得知室友要搬宿舍，表示自己愿意帮忙。
第二段表示不会忘记之前一起住的日子，以后还会常找他玩。
第三段说送个小礼物给他，以示亲切。