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限一词。
2.只允许修改10处，多者（从第11处起）不计分。
Dea
r Robert,
Thank（改为Thanks 或for 前加you） for yo
ur letter of May 12th . How glad I was when I get （改为got）it. I’d be very happy to be your pen friends (改为friend) .Now allow (加to) me int
roduce myself to you. I’m a boy student aged seventeen, study （改为studying） in Senior Th
ree of Binhai High School. I’m a （去掉a） monitor of my class. I amabout（去掉about）to take the National
Matriculation Entrance Examination after（改为in） twenty days, that is, between June 7 
and 8. You know. I want very （改为so）much
to be 
a doctor working for poor
peasants that I try to make fully（改为full） use of every hour and study far into the night ev
ery day.
Best wishes！
Yours truly,
Bob