◎ 题干
They peasants did what they____ the crops, but failed.
A.could saveB.could savingC.could to saveD.could saved
◎ 答案
查看答案
◎ 解析
查看解析
◎ 知识点
    根据n多题专家分析,试题“They peasants did what they____ the crops, but failed.A.could saveB.could savingC.could to saveD.could saved…”主要考查了你对  【therebe句型】  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。