名词解释：offer
An offer is a proposal addressed to specific persons indicating an intention by the offeror to be bound to the sale or purchase of particular goods for a price..
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Which of the following country is not a member of OECD?
________ in thought, he almost ran into the car in front of him.
Imagine how many times restaurants and merchants had to change their posted prices during the _____ 1970s, when prices almost doubled.
We are waiting ______ your reply ______ our letter.