The question that puzzled them is ______ they can get rid of the air pollution in the area

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
①答案为D为什么B不可以,选D的原因
②这句话为什么是表语从句而不是同位语从句
谢谢!
英语人气:408 ℃时间:2020-03-28 02:13:11
优质解答
答案为D三个句子两连词够了,The question is...;that puzzled them和they can get rid of the air pollution in the area共三句,that为一连词,如果B项就多个连词,而D项又加入强调句it is这句就需要三连词了.表语从句...
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