题目内容：

下面短文中有10处语言错误。请在有错误的地方增加、删除或修改某个单词。

增加：在缺词处加一个漏字符号（∧）, 并在其下面写上该加的词。

删除：把多余的词用斜线（\）划掉。

修改：在错的词下划一横线，并在该词下面写上修改后的词。

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。

My next vacation will be wonderfully for me. I will go to Maryland to visit my friends. I have known her for eleven years since I am in high school. Right now, she is studying English at the University of Maryland. When I visit her, she will have to go to her classes, but we will have lots of free time together either. When we go to high school together, she didn’t study very much hard. She wasn’t getting very good grades. And now she is a very good student in American. She know that she should study hard to success. We will have a great time together this summer.