◎ 题干
—I regretted what I have done.
—_______ gone is gone. ______ no use regretting it any more.
[     ]
A. What's; That's    
B. It's; That's  
C. What's; It's  
D. That's It's
◎ 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 regretted what I have done.—_______ gone is gone. ______ no use regretting it any more.[ ]A. What's; That'sB. It's; That's C. What's; It's D. …”主要考查了你对  【主语从句】  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。