短文改错。
假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的一篇作文。
文中共有10处语言错误，每句中最多有两处。错误涉及一个单词的增加、删除或修改。
增加：在缺词处加一个漏字符号(A)，并在其下面写出该加的词。
删除：把多余的词用斜线(＼)划掉。
修改：在错词下面画一横线，并在该词下面写出修改后的词。
注意：1. 每处错误及其修改均仅限一词；
2. 只允许修改10处，多者（从第11处起）不计分。
Dear Andy,
I am an university student. I once thought life at the university is excellent, but now I changed my mind.
I have three roommates, and I was the last one move into the dormitory. Last term, we got along peaceful
and happily. But I find they are not willing to be with me now. They don't talk with me, and they've become
even cold toward me than before. Many time, I wanted to talk with my roommates about that how I felt, but
I failed to find an opening. When leaving alone, I always recall this sadness. I am an honest student. Why can
I win true friendship?
Yours,
Li Lei
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