◎ 题干
-----Did you have a hard time traveling back home?
-----Yes, it ______ for four days when I arrived in Guiyang and all the roads______ covered with ice.
A.snowed, wereB.was snowing, had been
C.had been snowing, had beenD.had snowed, were
◎ 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“-----Did you have a hard time traveling back home?-----Yes, it ______ for four days when I arrived in Guiyang and all the roads______ covered with ice.A.snowed…”主要考查了你对  【一般现在时】【将来进行时】【过去完成进行时】【过去将来时的被动语态】  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。