Be quick, _______ we’ll be late for the class. —Ok, I’m coming.

If there _____ no buying and selling of animals, there will be no killing in nature.

How about going out for a walk—Sorry. I prefer_________ at home rather than ___________ out for a walk.

He didn’t put the things ____they belonged, for ____he got his punishment

Many people say they have seen Unidentified Flying Objects, which, they believe, ________alien spaceships.[ ]