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该文中共有十处错误,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、只允许修改十处, 多者(从第11处起) 不计分。 Many young boys and girls had the habit of smoking though they are middle school student. As we all know, smoking do harm to human beings. More and more 将下列句子改写成含有定语从句的复合句 Have you found the bike?You are looking for the bike．