填空题
Subject: Email
Usage: A mode of ______;
1
In business settings, it is best used to convey key information, to confirm ______; to document decision; to contact a decision maker directly.
2

Tips for you to improve your digital message.

Never say something about someone else that you would not want that person to see.
Take time to think about your ______ line.
3
Avoid using all ______ letters in your messages.
4
Be careful about any use of sarcasm and ______.
5