题目内容：

文中共有10处语言错误，每句中最多有两处。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(＼)划掉。

修改：在错的词下画一横线，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 Jack,

I am pleasing to hear from you and know that you had a greatly time working part-time in

a fast-food restaurant. Now I would like to share your working experiences with you during the past summer.

In the beginning of the summer vacation, I was hired as shopping guide in a big supermarket.

I stood for ten hours a day and smiled to everyone I have met. Sometimes I was laughed at, and most of the time, I was praised for my wonderful works by many people. Half a month passed quickly after I knew it, and I learned how to deal with different people.

Above all, I have learned that smile is the key to solve any problem.

Best wishes,

Yours Sincerely,

Li Ming