◎ 题干
—Do you know ____ the Smiths left Shanghai?   
—I'm not sure. I only remember it was a Sunday.    
[     ]
A. if        
B. when    
C. how      
D. why
◎ 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“—Do you know ____ the Smiths left Shanghai?—I'm not sure. I only remember it was a Sunday.[ ]A. if B. when C. how D. why…”主要考查了你对  【从属连词】  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。