The old professor ________ never ________ great pain since he suffered from AIDS．

Never ________ no matter how many times you have failed．

After Nelson Mandela ________，his government tried to improve the education for black people．

Robert, I knew in the factory ________ for stealing．

The training center which ________ last year is three metres away．

________，every parent hopes that their children will go to university．

Are you discouraged when you ________?

It’s not my fault．The TV set ________ when I turned it on．

Norman Bethune ________ the German Nazis and Japanese invaders during World War Ⅱ．

Imagine what you can do if you________ some day．