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。
I borrowed a interesting story book from the library the other day and took home. One evening,
having been finished supper, I went back to my room and started to read the book that I borrowed. I was such absorbed that I knocked the coffee cup over by accident, poured the coffee onto the book. Wet through or colored brown, the book turned out to be a terribly mess at once. Of course, I couldn’t return the dirty book and the loss should be covered. The next day, I went to the biggest bookstore in my city, which there were various kinds of books. I finally found several copies of the same book and bought one. When I returned the new story book and explain the reason, the librarian accepted the book and praised me to my honesty and responsibility.