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。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仅限一词；
2 只允许修改10处，多者(从第11处起）不记分。
Dear Brown, 
Last summer I take a part-time job in the International Camp for children．I have told one more worker will be needed in this year and I think you are fit for it．How about join us? The camp is at the foot of a small hill closed to a river．It is such beautiful a place! We can hear birds singing happy all around．Everybody sleeps in tents, that is very exciting．We usually work only five hours a day, so we will have plenty of spare time to visit the area and have fun. I am sure it will be a unforgettable experience．If you have interests in it, write to me soon．
Yours, Mary