We tried to stop the flames from spreading,but we knew it was ____.

England is rather short of arable land , soit is absolutely dependent upon other countries for her food __________．

“Do you know that Jack ______ a postman for about six years?” “Yes, I see.”

May I borrow your car, Jack——Sorry, it’s ____ this moment.

You can find Joe’s house easily because his house is _________ from others’ in the street by its pink walls and large windows.