We want to know what it was----caused the accident.

问题描述:

We want to know what it was____caused the accident.
A.when B.how C.that D.where
一定要把对错理由讲出来
1个回答 分类:英语 2014-11-01

问题解答:

我来补答
选C.这是it was...that的强调句型.
句子不缺少主语或者状语成分,所以不用when,how或者where.
 
 
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