此题要求改正所给短文中的错误。
May I have you attention please? I have a little things to tell you. When you have a class here in the language lab, please be here a little early. Change your shoes before enter the lab. Don't bring anything here except your text books. When you are into, please don't touch these machine without permission. Always do as the teacher tell you to. In class you should only speak the English, not Chinese. Recorders can be used make a copy of the listening materials. When class over, turn off your machines and leave the lab one by one.you→your
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(答案→)you→your
解析：
【小题1】此处是修饰attention，要用物主代词，故将you改为your.
【小题2】a little/little修饰不可数名词，few/a few修饰可数名词,things为可数名词复数，故将little改为few.
【小题3】a little 修饰形容词的比较级，故将early改为比较级earlier。
【小题4】若把before看成是介词，介词后接doing，则将enter改为entering，若把before看成连词，则后面要接句子，故要在enter前补充一个主语you.
【小题5】in 在……里; into 进入、变成 2. into强调由外及内的过程,而in不强调。看此处具体的语境是指在里面，故into改为in。
【小题6】these 修饰可数名词复数形式，故要将machine改为machines
【小题7】tell前面的主语是the teacher，单数可数名词，故要将tell改成第三人称单数形式tells.
【小题8】说某种语言，语言前不加冠词，speak English说英语。
【小题9】被用来做某事be used to do sth,故used的后面加to
【小题10】when引导的从句后缺谓语，故要补充be动词is