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，每句最多有两处。每处错误仅涉及一个单词的增加、删除和修改。
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：每处错误及其修改均仅限一词；
只允许修改10处，多者（从第11处起）不计分。
The Magic Tree House series are among the most popular book series ever writing for children． It tells a story of two kids, Jack and his sister Annie, seem to be very excited about finding a tree house in the woods． A tree house is magic and can transport him to various places and various times in history． It turned out that King Arthur from Camelot needs help． However, Jack’s head librarians, Morgan le Fay, sends him and Annie to help． They end up go to many different places and time periods through history on their adventures, which attract to readers a lot.
The series so far has had over 40 books and is likely to grow.