I am sorry but your watch is lost.中的but 是什么意思

I am sorry,but I forgot your name.为什么连词but不可以换成beacuse? I am sorry but your watch is lost.中的but 是什么意思 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. I am sorry for your loss. I am sorry for___(lose)your pen Dear Bob,Thank you very much for inviting me to your birthday party.I am very sorry,but I cannot I am sorry,()I can not go to your party.BUT还是AND 并说明问什么 I am sorry,I can not go to your partyI can not 前面填什么 A.and B.but Suddenly regret it,although we have many similarities,but your character let me...sorry I am not 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 i am sorry ,i have broken your cup 答语是什么