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        1. 【題目】It often takes me two hours _______ playing the violin.

          A.practiceB.to practiceC.practicingD.practices

          【答案】B

          【解析】

          句意:我經(jīng);▋蓚小時練習拉小提琴。

          考查固定句型。practice是動詞原形;to practice是動詞不定式;practicing是動詞-ing;practices是動詞三單。It takes sb. some time to do sth.做某事花費某人一些時間,固定句型;it是形式主語,真正主語是動詞不定式。故選B。

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