◎ 题干
I'd really appreciate ________ if you would turn off the lights before you leave.
[     ]
A.you  
B.that  
C.as  
D.it
◎ 答案
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◎ 解析
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◎ 知识点
    根据魔方格专家分析,试题“I'd really appreciate ________ if you would turn off the lights before you leave.[ ]A.youB.thatC.asD.it…”主要考查了你对  【it的用法】  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。