◎ 题干
All that can be eaten ____  eaten up.    
[     ]
A. are being    
B. has been    
C. had been    
D. have been
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“All that can be eaten ____eaten up.[ ]A. are beingB. has beenC. had beenD. have been…”主要考查了你对  【现在完成时】【主谓一致】  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。