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It was not until recently ___ any idea about that.

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It was not until recently ___ any idea about that.
A.that did I have
B.when I have
C.did I have
D.that I had
为什么?其他几个为什么不可以?
It was not until recently ___ any idea about that.
这是强调结构句
It is/was+被强调部分 + that - 从句

被强调的是【not until recently 】
还原:
I didn't have any idea about that until recently .
我知道最近才知道那件事

在被强调部分是状语时,后面从句只能用that 引导,排除 B,C
that 从句不能倒装, 排除A

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