I'm sorry to hear that he is s( ) ill首字母已给出

I'm sorry to hear that he is s( ) ill首字母已给出
I'm sorry to hear that he is s( ) ill
首字母已给出

I'm sorry to hear that he is s( ) ill首字母已给出
seriously（严重地）
句子翻译是：听到他病得很重我感到很抱歉
seriously ill是固定搭配,形容病得不轻

I'm sorry to hear that he is seriously) ill
首字母已给出我很难过他生病还没好

填 seriously
严重地。
听说他病得很严重，我很抱歉。