He’s posted the letter, _________ he?
| A．isn’t | B．doesn’t |
| C．hasn’t | D．wasn’t |
—If people make small changes, like taking buses instead of driving cars, it will make a big difference.
—_____. Then the traffic will be much better.
| A．That’s all right | B．You are right |
| C．I don’t quite agree | D．Oh, come off it |
The thieves ran away as soon as the alarm _____.
| A．gave off | B．put off | C．showed off | D．went off |
All the athletes competed _____ each other for gold medals in the Olympic Games.
| A．against | B．for | C．between | D．over |
All his free time is _____ by charity work, but he feels it meaningful.
| A．put up | B．given up | C．picked up | D．taken up |
Bill Gates is so _____ that he has given away most of his money to charity.
| A．brave | B．smart | C．generous | D．skilful |