中国大学MOOC: Why do we write an invitation letter?_
举一反三
- Why do we write an invitation letter?
- 中国大学MOOC: For a formal information, we usually write invitation letters.
- 中国大学MOOC: To write an invitation card, we need figure out what an invitation card should _____________
- How to write a letter of invitation?
- 中国大学MOOC: A letter of invitation can be classified into formal invitation and informal invitation.