◎ 题干

--Who is the person talking with you just now?
-- Well, if you ______ know, his name is David.
A.mayB.canC.mustD.shall
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“--Who is the person talking with you just now? -- Well, if you ______ know, his name is David.A.mayB.canC.mustD.shall…”主要考查了你对  【虚拟语气】【情态动词】  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。