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一下作文。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：吧多余的词用斜线（\）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

    Next Sunday, the twenty-five of October, we are have an open day at our school. It's going to be about the environment, with kinds of fun things happen. Our geography teacher will show a documentary film about air pollute. Our science teacher is running a workshop with practical ideas on what to do with things can be recycled, like newspapers and box. Then in the evening Dr. Lynda Potter, a environmentalist, is going to give a talk. It will be about what everyone can do something to help the environment. They will also be books for sale about protecting the environment. I think it's going to be a real good day.