文中共有10处语言错误，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 Sir，
Thank you for you offer of invite me to the summer English course in your school.As for your choice between the two courses,I prefer the four-week course for 60 hours of study.Because of this would allow me more times to do some travelling and make a few new friends either.Of all the subjects I’m learning at school,I like English best.I had been learning English for 6 years but my spoken English remains poorly.So I hope to take this chance to improve it.If is possible,I’d like to stay with a family for a couple of days in order I can know some customs in England.I believe I will have wonderful time this summer. 
Yours truly,
Li Hua