◎ 题干
________ he can't understand is ________ his son doesn't like the school.He is very upset about this.
[     ]
A. That;  why 
B. Why;  that
C. What;  why  
D. Whether;  that
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“________ he can't understand is ________ his son doesn't like the school.He is very upset about this. [ ]A. That;whyB. Why;thatC. What;whyD. Whether;…”主要考查了你对  【连接代词】【连接副词】  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。