You can take any seat _____is free .
Though small, the oranges sell ___________, because they taste __________.
The writer will let me have a copy of his new book as soon as it ___________.
Of her plays, three were __________ and one was ___________ failure.
The bridge was named __________ the hero who gave his life for the cause of the people.
The professor paused as if ___________ his students to ask questions on the point he had just made.