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以下作文。文中共有10处错误，错误涉及一个单词的增加、删除或修改。
增加：在缺词处加一个漏词符号(/\)，并在此符号下面写出该加的词。
删除：把多余的词用斜线(＼)划掉。
修改：在错的词下划一横线，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 Tom,
How time flies! We will have to say goodbye after a week, but I will never forget the beautiful days when we spent together. In my memory, you are such kind a person that you will always offer me help wherever I get into trouble. You are the most considerate person who know exactly what I need in our class.
Do you still remember that night twenty years ago? When I suddenly fell ill, you carried me to nearest hospital. Moreover, you attended to me careful while I was staying in hospital. Later, you managed to help me with my lesson. Without your help, I can not have passed the exam. Though we are parting soon, but I will keep the favors you’ve ever done me in mind.
Best regards
LiHua