◎ 题干
I'd appreciate _____ if you could turn the radio down. I'm doing my homework.
[     ]
A. you  
B. that  
C. this  
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 appreciate _____ if you could turn the radio down. I'm doing my homework.[ ]A. you B. that C. this D. 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。