The boy never has____breakfast. —-It’s___unhealthy habit.you must ask him to change it.

What color is our national（国家的）flag(旗帜)? It’s ________.

Do you mind telling us something about this area?— Not at all. ________ of the land in this area _________ covered with trees and grass.

Can you drive a car? — No, I ________. I’m not old enough to get a license.

The four modernizations in China will_____________ sooner or later.