◎ 题干
-- ____ __ have you been at this factory?
-- Since 2000.
A.How longB.How muchC.How oftenD.How soon
◎ 答案
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“-- ____ __ have you been at this factory? -- Since 2000.A.How longB.How muchC.How oftenD.How soon…”主要考查了你对  【副词的比较级,副词的最高级】【关系副词】【疑问副词】【频度副词】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。