◎ 题干
The letter _______ three days ago and it ______ yesterday.     
[     ]
A. had post, had arrived    
B. was posted, arrived    
C. posted, arrived    
D. had been posted, was arrived
◎ 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“The letter ______ three days ago and it ______ yesterday. [ ]A. had post, had arrived B. was posted, arrived C. posted, arrived D. had been posted, was arri…”主要考查了你对  【被动语态】【一般过去时】  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。