◎ 题干
---what's your sister doing?
----_________.
[     ]
A. She sings    
B. She often watches TV
C. She's singing  
D. I am singing
◎ 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“---what's your sister doing?----_________.[ ]A. She sings B. She often watches TVC. She's singing D. I am singing…”主要考查了你对  【特殊疑问句】  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。