The structure of letter writing includes three parts.（ ）
举一反三
- A standard business letter includes 6 principle parts.
- As for the structure of the presentation, it is advisable to always limit it to three parts.
- The basic structure of drafting an initial letter includes: ___________.
- The basic structure of a business letter includes: A: heading
- The basic structure of this kind of writing is very simple. It includes ______.