第一节 短文改错（共10小题；每小题1分，满分10分）
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作文。文中共有10处语言错误，每句中最多有两处。错误仅涉及一个单词的增加、删除或修改。
增加：直接 填上所缺单词
删除：把多余的单词填上即可。
修改：直接写上修改后的词。
注意：1. 每处错误及其修改均仅限一词；
2. 只允许修改10处，十句话对应十个填空，不允许串题。
（1）I’m a 18-year-old middle school student.（2） I am so busy with my studies that I seldom help my parents the housework.（3） Feeling quite sorry for that, so I begin to think about what to do to help.
（4）Last Sunday, when my parents went out shopping, an idea occurred to me: why not giving the rooms a thoroughly cleaning?（5） First, I collected all the books, newspapers and other things scattering in the rooms and put them in place.（6） Then I wiped the dust off all the furnitures.（7） After that, I sweep and mopped the floor.
（8）At that very moment, my parents came back and found all the rooms tidy, that surprised them.（9） My mother gave me a hug and I could see tears in his eyes.（10） Tired although I was, I never felt so happy.
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