题目内容：

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。

   Yesterday we invited Mr. Li to give a speech to our Senior 3 students. All of us felt deep touched by his interested lecture.

  Mr. Li once studies in his same school many years before and later he went to a famous university in the North. After graduation, he devoted his life to teach in the rural areas of our country for more than over 30 years. Her devotion and selflessness are highly thought of by all his student as well as by the society.

As senior high school student, I’m determined to learn from Mr. Li and become a worthwhile schoolmate of our school.