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：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(\)划掉。

修改：在错的词下画一横线，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 grew up in Westley, California. After graduating with high school. I went to Beijing and started teaching in a kindergarten. I had never been to a city big as Beijing before. I fall in love with Chinese food. I would eat out at the different restaurant every night and practice my Chinese with local citizen. I suppose the air was clean back home, but my life in China was much more interesting. My most favorite part about living in Beijing was nothing that many other foreigners didn't like at all—the noise. I loved walking outside my door and hear the sounds of city life. Therefore, I'm back in Westley now, and all I hear is silence. I definitely miss Beijing.

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阅读下文，回答相关问题。
         天上的云，真是姿态万千，变化无常。它们有的像羽毛，轻轻地飘在空中；有的像鱼鳞，一片片整整齐齐地排列着；有的像羊群，来来去去；有的像一床大棉被，严严实实地盖住了天空；还有的像峰峦，像河流，像雄狮，像奔马…… 它们有时把天空点缀得很美丽，有时又把天空笼罩得很阴森。刚才还是白云朵朵，阳光灿烂；一霎间却又是阴云密布，大雨倾盆。云就像是天气的“招牌”：天上挂什么样的云，就将出现什么样的天气。

下列属于不正当竞争行为的是(　　)

①假冒或者仿冒的“搭便车”行为

②虚假宣传、虚假广告行为

③盗取、泄露、使用他人的商业秘密的行为

④为吸引消费者，进行低价倾销的行为