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，删减或修改。
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,多着(从11处起)不记分
My hair was used to be very long.I dreamed of donating it to sick children which had lost their hair. My teacher has donated her hair, so I wanted to donate mine, either. My dream came true last Christmas. After I told my teacher I was ready donate my hair, she praised me. Then we paid the visit to a hairdresser.The hairdresser cut 20 inch from my long hair and styled what was left. It was hard to say good-bye to my hair, so to help others made me feel happily. Now some of my friends are growing their hair long so that they can donate them this year.