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。作文中共有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：在缺词处加一个漏子符号（∧）并在其下面写出该加的词。
删除：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。
As we know, it was not easy for J.K Rowling to create Harry Potter. The idea for Harry Potter come to her while she was on a delayed train between Manchester and London. She wrote down her ideas on the back of envelope. She then continued to add flesh for the bones of the first Harry Potter story. During her creation, she had the extra burden of look after her baby and had to write with hand for a lack of typewriter. It was only in 1997 she completed the first Harry Potter story. After the first book, the success of each of the following titles was automatically. The fifth book sold about seven million copies the day when it was published. What makes the books so important are that they create a special literary bond between parents and children. In addition, much to the pleasant of the schoolchildren, Harry Potter has even become part of the school curriculum.