The food smells delicious! I can’t wait ______ it.

They are quiet，aren’t they—Yes. They are accustomed ________at meals.

They want a house, we would rather live in a flat

_____ man may usuallybe known by the books he reads as well as by ______ company he keeps.

In the eyes of a policeman, it’s usually dangerous to get close to the_______ criminal. He may do anything he would to escape.