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        1. 精英家教網 > 初中英語 > 題目詳情
          --________do you go to the dentist?
          --Let me see, twice a year, maybe.
          A.How manyB.How muchC.How oftenD.How soon
          C

          試題分析:句意:你多長時間去看一次牙醫(yī)?讓我想想看,也許一年兩次吧。twice a year一年兩次,表示頻率,要用how often來提問,故選C。
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