It is selfless ______ the doctor to devote all thetime he had ________ for the patients.–I think so, they are so great.

The Project Hope _____ to help the poor children to go to school in China _____ to be a success.

In all kinds of competitions, Jackie ______ a most excellent athlete. He has won so many golden medals.

_______ you do, do it well.

We should take care of the blind. It is immoral to _______ them.