The question that puzzled them is ____ they can get rid of the air pollution in the area.A.how is it

题目简介

The question that puzzled them is ____ they can get rid of the air pollution in the area.A.how is it

题目详情

The question that puzzled them is ____ they can get rid of the air pollution in the area.
A.how is it thatB.that howC.that it is howD.how it is that
题型:单选题难度:中档来源:不详

答案

D
    
试题分析:考查表语从句。此处是强调句型的特殊疑问句做表语从句,语序为:疑问词+it +is +that+被强调部分,故答案选D。句意:使他们困惑的是他们如何才能去除这个地区的空气污染。

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