中国大学MOOC: Any offer can be withdrawn, but not every offer can be revoked.
举一反三
- 中国大学MOOC: Any offer can be withdrawn if the withdrawal reaches the offeree before an acceptance is dispatched.
- 中国大学MOOC: They can offer _____.
- 中国大学MOOC: Which offer cannot be revoked?
- 中国大学MOOC: Enquiry and offer can only be done in written way.
- 中国大学MOOC: The package tour can offer you such services as___________.