◎ 题干
---You see, my mum has promised to buy me ________MP4 next month.
---Oh, really? But I wish I could listen to music________MP3.
A.a; byB.a; overC.an, onD.an; with
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“ ---You see, my mum has promised to buy me ________MP4 next month. ---Oh, really? But I wish I could listen to music________MP3.A.a; byB.a; overC.an, onD.an…”主要考查了你对  【介词和介词短语】  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。