◎ 题干
The assistant has       all the paper. So she has to buy some tomorrow.              
[     ]
A. cut up          
B. mixed up        
C. used up          
D. given up
◎ 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 assistant has all the paper. So she has to buy some tomorrow.[ ]A. cut upB. mixed upC. used upD. given up…”主要考查了你对  【动词短语】【现在完成时】  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。