◎ 题干
   The key you have just got ____ the front door.
A.is used to openingB.is used to be opened
C.is used to being openedD.is used to open
◎ 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“ The key you have just got ____ the front door.A.is used to openingB.is used to be openedC.is used to being openedD.is used to open…”主要考查了你对  【动词短语】【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。