◎ 题干
They urged that the library_______ open during the vacation.
A.must be keptB.is kept
C.would be keptD.be kept
◎ 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“They urged that the library_______ open during the vacation.A.must be keptB.is keptC.would be keptD.be kept…”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。