I'm sorry,_____________I can't go to the movies with you 横上上的词用and还是but?

I'm sorry,_____________I can't go to the movies with you 横上上的词用and还是but?
I'm sorry,_____________I can't go to the movies with you 横上上的词用and还是but?

I'm sorry,_____________I can't go to the movies with you 横上上的词用and还是but?
but
but 用于表示歉意的话语后,引起一个分句,but本身无意义.如：
I’m sorry,but I think you are wrong when you say she did it willingly.
抱歉,你说她情愿做那件事,我觉得你搞错了.
Excuse me,but are you Mr.Smith?

but

BUT

可能是but

and

填but 表示转折

and，表示道歉的原因

and