短文改错（共10小题；每小题1分，满分10分）
文中共有10处语言错误，每处错误涉及一个单词的增加、删除或修改。增加：在缺词处加一个漏字符号（∧），并在其下面写出增加的词。删除：把多余的词用斜线（\）划掉。修改：在错的词下划一横线，并在其下面写出修改的词。
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（从第十一处起）不计分。
Welcome to our English Corner. It set up four years before. Since then many high school students have joined in it. Students from different school gather round here every Sunday morning, and there are also some college students or foreigners. We talked about everything we are interested in. We also exchange our effective experience in English study. We think we have learned much here. It is a really addition to our English class and it is popular in students. And it is supporting by parents and teachers. They all believe it is in great help to students. If you want to know much about it , you may talk to the students here.