题目内容：

假如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。:

I am an 18-year-old middle school student. I have been busy with my study and seldom helped my parents in the housework. Felt quite sorry for that, I began to think about how to do to help. Last Sunday, w hen my parents went out shopping, I suddenly got an idea: why not to give the rooms a thorough cleaning? Firstly I collected all the books, newspapers and another things scattered in the rooms and put them in place. Then I wiped the dust of all the furniture. After that, I sweep and mopped the floors.

At this very moment, my parents came back and were quite surprise to see all the rooms tidily and floors shining. My mother gave me hug. Tired as I was, I never felt so happy.