To write an invitation letter, you should follow the three steps except _______.
举一反三
- Write （ ） letter when you want to extend a business invitation, such as an invitation to a party or other event.
- When you write a letter of congratulations, you should（ ）？
- When you write a letter of apology, you should at the beginning of the letter and clearly state the problem.
- How to write a letter of invitation?
- Write ( ) type of letter when you want to extend a business invitation, such as an invitation to a party or other event. A: thank-you B: congratulation C: invitation D: apology