◎ 题干
We      the postcards yesterday, but it didn’t arrive.
A.should receive B.ought to receive
C.ought to have received D.must have received
◎ 答案
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◎ 解析
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◎ 知识点
    根据魔方格专家分析,试题“ Wethe postcards yesterday, but it didn’t arrive.A.should receiveB.ought to receiveC.ought to have receivedD.must have 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。