◎ 题干
People were not allowed to enter the reading room because it _______.

A. had been painted
B. was being painted
C. was painting
D. painted

◎ 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“People were not allowed to enter the reading room because it _______.[ ]A. had been paintedB. was being paintedC. was paintingD. painted …”主要考查了你对  【过去进行时的被动语态】  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。