Sorry is the hardest word 
Remember
Verb: regret to + infinitive
Use "regret to + infinitive" to express sadness about what you are going to say or write.
Verb: regret + noun
Verb: regret that
Use "regret that" to express an apology for or sadness over something unpleasant.
Noun: regret
Use "regret" to show sadness or disappointment about something.
Adjective: sorry
Use "be sorry" to express sadness or regret. Use "feel sorry" to show sympathy.
Verb: apologize + for + (doing) something
Verb: apologize + to + something + for + (doing) something
Noun: apology
Use "apologize" or "apology/apologies" to say something you have done that was wrong or has upset someone else; to express regret for something you have done.
There are many ways to say you're sorry, but not all of them are suitable for a reply to a complaint. We've created an exercise to help you learn which expressions you can use. Which sentence(s) is (are) too informal for a business situation?
Deborah Capras













COMMENTS
thank you