◎ 题干
The question that puzzled them is_____ they can get rid of the air pollution in the area.

A. how is it that      
B. that how    
C. what is it        
D. how it is that
◎ 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 question that puzzled them is_____ they can get rid of the air pollution in the area.[ ]A. how is it thatB. that how C. what is itD. how it is that…”主要考查了你对  【表语从句】【强调句】  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。