◎ 题干
________ your letter, I would have started off two days ago.
A.If I receivedB.Should I receive
C.If I could have receivedD.Had I received
◎ 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“________ your letter, I would have started off two days ago.A.If I receivedB.Should I receiveC.If I could have receivedD.Had I received…”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。