--- Don’t bother to buy me an air ticket. I’ve got one.--- ______ Why didn’t you tell me earlier? I’ve got one, too.
--Do you know when the Chinese custom_________ from? --It's hard to say. But its characteristics__________ the Tang Period.
Paper bags produced every year are ______ the world’s production of vehicles.
His spare time is made full use_______ law.
Some of the old beliefs passed down from one generation to another ________ the present thinking.
Who would you rather ______ with the teacher about the problem?