Question

I found ________ hard to review every subject after I finished my homework.

A．it’s

B．that

C．it

D．it be

Answer 1

C

试题分析：句意：我发现在我完成作业后复习每个科目都是困难的。it经常代替动词不定式做形式主语或形式宾语，该句中it做形式宾语。故选C。