They _______ drinking although they are drivers, which is very dangerous both to them and the passengers.
| A．give up | B．devote themselves to |
| C．quit | D．abandon themselves to |
Tom makes ____a rule to give a summary of the new important points after class.
| A．that | B．what | C．them | D．it |
Into the dark apartment ___ , who was quite surprised when everyone shouted “Happy birthday!”
| A．did David walk | B．David did walk |
| C．David walked | D．walked David |
－I’ve decided to compete in the race, but I’m afraid I won’t be the best.
－____. You never know until you try.
| A．Enjoy yourself | B．Go for it |
| C．Do as you like | D．Take your time |
The dog ____attacked passers-by and therefore was kept on a chain by the owner.
| A．eventually | B．fortunately |
| C．frequently | D．similarly |
The boy has great ____ in sports. Trained properly, he’ll make a first-class athlete in time.
| A．motivation | B．influence |
| C．potential | D．possibility |