I found__necessary to tell you about the bad newsA it's B this C,that D,it 选什么,

I found__necessary to tell you about the bad newsA it's B this C,that D,it 选什么,
I found__necessary to tell you about the bad news
A it's B this C,that D,it 选什么,

I found__necessary to tell you about the bad newsA it's B this C,that D,it 选什么,
D,it it作形式主语
形式宾语的句子 主语 +谓语+ it +adj +to do sth
形式主语和宾语的使用都是为了简化语句,让别人一目了然.当主语、宾语是很长的从句、不定式、动名词时常用“形式主语”和“形式宾语”来替代,而真正的主语、宾语置于句末.之所以用it 代替是 避免头重脚轻.

D
find it adj +to do sth 固定用法： IT 作形式宾语，adj。作宾补，不定式是真正的宾语

D

it 作形式宾语， 真正宾语为句尾的不定式短语 to tell you about the bad news
能作形式宾语的只有it


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it.find it easy to do sth.固定搭配

d
find it + 形容词+ to do