◎ 题干
      does your father go to see your grandmother ?
- Once a month .
A. How long .          B. How soon          C. How often.
◎ 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“-does your father go to see your grandmother ? - Once a month . A. How long . B. How soon C. How often.…”主要考查了你对  【助动词】【介词短语】【固定搭配】【疑问词组】  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。