Research found that children who drank mainly soda were more than twice as likely as those who drank no soda _______ signs of aggression.
| A．showing | B．shown |
| C．to show | D．show |
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 |
If the service is awful, a customer has the right to _____ to the manager.
| A．react | B．apply | C．complain | D．suggest |