it is said that 可以省略that吗

it is said that 可以省略that吗 句型It is said that 中的that可以省略吗 it is said that这that可省略吗? 'it is believed that +从句' 中that可以省略吗? It is time that that可以省略吗 It is said that. it is said that It is certain that he will win the match.这句话中的that可以省略吗 it is no doubt that的that可省略吗 it is said that的it is能省略么?（作状语） it is said that的固定结构可以改成 it was said that? It is said that that was all that he said.