I believe it's important to sleep 8 honrs a niagt.是什么句?

I believe it's important to sleep 8 honrs a niagt.是什么句?
1.本句是一个带有___从句的复合句,译为_______________________________.否定句为____________________________.从句中it为______主语,真的主语是I.
2.Eat a balanced diet to krrp healthy.译__________________,这是一个________句,其中______是谓语动词,用________原形.
4.I hope you're enjoying my school in New York.本句是个带有_____从句的复合句,复习hope 的用法___________________
大堆了多给50分昂.
谢哒..