While writing an invitation card, the _____ must be strictly followed.
举一反三
- The writing format of the invitation letter and the invitation card is the same.
- What person could be used when writing the invitation card?
- An invitation card is always used on informal occasions while an invitation letter is always used on formal ones.
- 中国大学MOOC: Invitation cards should be given in advance. The more formal the activity is, and the more important the guest is, the earlier your invitation card must be given to. Generally speaking, it must be _______ in advance.
- 中国大学MOOC: To write an invitation card, we need figure out what an invitation card should _____________