It is stipulated that从句中要用动词原形么?

It is stipulated that从句中要用动词原形么?
It is stipulated that从句中要用动词原形么?

It is stipulated that从句中要用动词原形么?
"It is important (necessary,strange,impossible,natural) that ." 中,that后面的从句中的谓语动词用：(should) + 动词原形.如：It's