假定英语课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。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：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。
After spending many time at the hospital with my 70-year-old mother-in-law, we went out to have something eat at 9:30 pm. The server was very busy prepare to close the restaurant. However, he was kind and served us good without asking our reasons for so a late dinner. Before we left, I went up and gave him an generous tip even though this restaurant didn’t require any tip. At first she refused but I insisted on and he accepted it finally. It make us both very happily.
