问题

I suffered in a heavy accident the other day and only then the value of life

A:had I realized
B:did I realize
C:I realized
D:I had realized

正确答案是：

同类题型

Only _____as an interpreter _____how important itis to grasp English. [ ]

下列句子中加横线的人称代词比括号里的人称代词更能体现人物的情感、性格，其中分析错误的一项是（）

The boy asked his mother _______ go out to relax himself or not.

Can you give me a case ______ this phrase can be used?

Not until the teacher came in ______ what I had said.[ ]