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处语言错误，每句中最多有两处。每处错误仅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（∧），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限一词;
2）只允许修改10处，多者（从第11处起）不计分。
Three years ago, I went to a boarding school. The reason for my attended such a school was that my parents was very busy. They often went abroad on business but had no time to take care of myself. Besides, they thought I ought learn to be independent. Honest speaking, the school life does benefit me a lot. I not only learned some ways to solve problem on my own but also learned how to get along with others. But that I treasure most now is the friendship that I developed into at that time. How I miss that wonderful time!
