I'm sorry that 后可以加从句吗?

i'm sorry that 接从句用虚拟吗? hear from 后加that从句可以吗 hope后可以加that从句么 i'm sorry to hear that .that可以换成this I'm sorry to hear that.为什么要加to? I'm sorry (hear) that. I'm sorry that I can't go with you这是什么从句? I‘m afraid that+从句后的从句为什么是宾语从句 owing to后可以加从句吗 think of 后加从句可以吗, 介词后可以加状语从句吗? request加that 从句时that 可以省略吗