Look at these openings letters. Which person is writing to an old friend?
1. Dear Jane,
Many thanks for your letter. How nice to hear from you!
2. Dear Mr. Bailey,
I saw your advertisement in the Nursing Times for staff nurses in Canada.
3. Dear Richard,
You may be surprised to get a letter from me after such a long time.
4. Dear Ms. Anne,
Thank you for your letter of 15thMay enclosing a cheque for 50 dollars.
How nice to hear from you!