He tried his best to solve the problem,________difficult it was.
Every means __________ prevent the water from __________.
That salesman __________ me to buy his MP4,but it doesn't work well now.
Doctors __________ him again and again to give up __________.
He trusts you. Maybe you are able to __________ him to give up that foolish idea.
Only Edward can lift that heavy stone because he is a man with great __________.