Part 5: Sample letter of congratulation: Write a letter to your friend Henry to congratulate him on his promotion to be the general manager of his company. In your letter, you should express 1) your delight; 2) your comment;3) your wish. Do not sign your name at the end of the letter. Use Li Ming instead. Dear Henry, I am writing to offer my sincerest congratulations on your promotion to be the general manager of your company. As your close friend, I just want you to know h