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

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）不计分。
Dear Mary，
I’ve received your e-mail. Don’t worried about me. I’m getting on well with my research work in the lab. But in my surprise, you say you will give up learn English. The reason is because you have not done well in it recently and you have lose interest. I’m afraid I can’t agree with you. I know it is not easy to learn English, and it is widely used in the world today and it will be important tool in the future. Beside, it is becoming more and more important in our daily life. I am sure that if you study hardly, you will succeed. I’m looking forward to hearing a good news from you !
Yours,
Li Hua