I am sorry but...必须用but吗?but的作用在这里是什么?

I am sorry but...必须用but吗?but的作用在这里是什么? I am so sorry But I love I am sorry but I love you. I am sorry but I love you. But I Am Really Sorry什么意识 I AM SORRY.BUT IT IS TRUE. I am sorry to trouble you but. Sorry I'm wrong,but I am still loving you. 不好意思,I am sorry ,but I still love you i am sorry ,but i ____ what you said 英语翻译I am sorry ,but i think i am not wrong .Thank youI am sorry ,but i do not think i am wrong ,thank you I am sorry you have been waiting so long .BUT I am sorry,but we have to depart. I,am sorry,i like you.but.sorry,i want to you happy.if without me I know love means never say sorry,but sorry,I am I know love means never say sorry but sorry I am me I know love means never say sorry,but sorry,I am me I am sorry so sorry