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短文。短文中共有10处错误，每句中最多有两处。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（∧），并在此符号下面写出该加的词。

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。

    Our class paid a visit to a senior's home last Sunday.As soon as we got to there,we first did a thorough cleaning. Some swept and mopping the floor.Some cleaned the windows or others did some washing.An hour late,the rooms looked clean and tidy and took on a newly look.Then we were divided into two group.One group gave a wonderful performance who the elderly enjoyed very much;the other group taught those interested in English some daily expressions.All the elderly had good time with them.When lunch time came,we had to say goodbye for them.