It is supposed that 据推测
It is hoped that 希望 ; 盼望 ; 人们希望 ; 生机
It is estimated that 据估计
it is thought that 人们认为 ; 据认为 ; 有人认为
It is dangerous that 有危险
it is clear that 显然 ; 很清楚 ; 很显然 ; 很明显
It is recommended that 有人推荐 ; 建议 ; 它是建议
It is required that 据要求