---Tell us, Mark, what is the cause of the American Civil War?---Well, is it _______the black slaves wanted freedom?
–Can you come on Monday? –No, I am_______.
Anything _____ could be found has been used to repair the damaged bridge.
Here is my classmate _____ bicycle was lost yesterday.
_____ seemed as if nobody knew anything about the matter.
At the sight of the _____ scene, he was almost _____ to death.