i am really sorry,_______i can't go swimming

Question

i am really sorry,_______i can't go swimming with you this sunday. it's OK .we can go together next time. A,so B,then C,or D,but 上述选择题我觉得应该选择D,表示转折，不对吗？如果不对，请给出具体解释，谢谢

Answer 1

选择D,正确。但是不表示转折。
i
am
sorry,
but
....是个固定句式
翻译为：对不起，...（后加具体的内容）
再比如：I
am
sorry,
but
I
am
in
a
meeting
now.
对不起，我正在开会。