下面短文中共有10处错误，错误涉及一个单词的增加、删除或修改．增加：在缺词处加一个漏词符号（∧），并在此符号下面写出该加的词．删除：把多余的词用斜线（）划掉．修改：在错

　　下面短文中共有10处错误，错误涉及一个单词的增加、删除或修改．

　　增加：在缺词处加一个漏词符号（∧），并在此符号下面写出该加的词．

　　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 Headmaster，

　　I am writing to talk about the canteen of our school．There are only a few stand in the canteen，leading to lots of students have to line up for food．It is waste of time，isn't it？But at times the food is not fresh and does not taste deliciously．So it's not surprising that some students chose to go to the street to buy junk food which do harm to their health．Would you think about that how to improve it？I would appreciate you if you could take some measures．Hopefully，my opinion can be taken to account．

　　Jack．