◎ 题干
-Who is the woman that is washing clothes? Is it your mother? 
-No, it _______be her. She is much thinner.  
[     ]
A. mustn't            
B. may not  
C. can't              
D. needn't
◎ 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“-Who is the woman that is washing clothes? Is it your mother?-No, it _______be her. She is much thinner. [ ]A. mustn'tB. may not C. can'tD. needn't…”主要考查了你对  【情态动词】  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。