It was in the northeast of Japan ( ) an earthquake happened on March 11.

问题描述:

It was in the northeast of Japan ( ) an earthquake happened on March 11.
A.when B.where C.which D.that
说明原因,特别是BD

这是一个强调句,it be 动词+被强调内容+that.这是一个固定句式,必须要用that,括号后面的句子 中,an earthquake 是主语,happened 是谓语,后面的是状语,而且把It was 和that去掉,句子可以说得通.如果选B,你想用where引导的句子作定语从句,这样的话句子结构不通,所以,答案只能是D.