对不起，我要走了！

热心网友

Sorry, I have to go. 或 Sorry, I must go.

热心网友

sorry,I' rry,I'vegottogonow.

热心网友

sorry, but I have to go.

热心网友

Sorry,I've to go.

热心网友

Sorry! I have to go now .

热心网友

Sorry, I must go now!