Mr.Smith used to smoke __________ but he has given it up.
-When ____ you return the dictionary to me? -Only when I ____ you next Sunday.
Charles did what he could _____ the servant, although he himself was in danger.
Let us hope we can settle the matter without _____ more trouble.
His best known work that is _____ all praise can be seen in the museum.
I will give the book to _____ wants to read it.