我对自己说过的话感到抱歉。

I feel ___sorry for what I said.

抱歉，我不能参加明天的聚会。

___Sorry, but I can't join the party tomorrow.

听说你考试没及格，我为你感到难过。

I'm really ___sorry to hear that you failed the exam.

抱歉，你的航班延误了。

___Sorry, but your flight has been delayed.