在空白处填入恰当的词,使上下句意义相同或相近.

问题描述:

在空白处填入恰当的词,使上下句意义相同或相近.
We found that it was too hard to find out the differences between the twin brothers.
We found _____ _____ to find out the differences between the twin brothers.

We found that it was too hard to find out the differences between the twin brothers.We found 【it】【hard】to find out the differences between the twin brothers.