Rewrite the phrases and sentences in more formal English, starting with the words given. Keep a similar meaning.

1. Thanks for the letter about the fire.
   Thank you for your letter regarding the fire.
2. I’m sorry to tell you …
   I
3. I’m happy to tell you …
   I am
4. Are you free on Wednesday?
   Are you
5. I want to ask about the dates of the course.
   I would like to
6. We want to say sorry for the delay.
   Please accept
7. Please send me the details.
   I would be
8. Could you say that’s definite in a letter?
   Could you
9. I’m sending a copy of my CV.
   I