Question

it was some time ( ) we realized the truth.应该怎么答？

it was some  time (  )  we realized the truth.如何填空？

Answer 1

it was some time (since ) we realized the truth.我们已经认识到真相有一段时间了。
这里是句型：It is +一段时间 +since +一般过去时。
与这个相类似的一个句型是部分强调句：It is + 被强调部分+that + 从句。
比如：I met him in the street. (对him进行部分强调）
It was him that I met in the street.
这里如果填that 的话，我们还原后就应该是：We realized the truth for some time.
那样原句应该是这样：It was for some time that we realized the truth.
当然了：本题如果单从意思上来看，填before, after等词也完全可以， 不过我们的考题一般是在since 和that 中选择的。
希望能够帮到你，祝你学习进步！

Answer 2

before
It was some time before
过了好一会儿才…

It was some time before I realized the truth.
过了很长一段时间我才了解到真相。

Answer 3

that

希望能帮到你~

Answer 4

before