—Listen! There is a knock on the door.Who _____ it be?—It must be Jack.Just now I sent for him.
It's no _____ arguing about it, because he will never change his mind.
The city was _____ to me, and I didn't know where to go.
The book is not _____ what we paid.
The thief ran away at the _____ of a policeman.
There are usually at least two _____ of looking.