"sorry for not doing something" or "sorry about not doing"for or about?

sorry for not doing something or sorry about not doingfor or about? sorry to do和sorry for doing区别sorry to do和sorry for doing 区别? Sorry,they're not for sale. We break up!Not suitable for sorry be sorry for doing something.这个怎么用? I'm sorry. Forgive me for doing so. 是什么意思 reason for not doing something是什么意思 not much for doing 怎么翻译? be sorry for 造2句for后面加动原还是doing? I'm sorry for not giving luck to you.翻译 I'm sorry for not giving any luck to they,sale,are,for,sorry,not(,.)连词成句 sorry you can not take any more class for once was he sorry for what he'd done?not rally. Sorry for my not checking the email until now. Do not know how a really good feel sorry for 有be sorry doing 有be sorry for doing sth和be sorry about sth 如果有的话麻烦举例呀!