_____and I’ll get the work finished.
| A．Have one more hour | B．One more hour |
| C．Given one more hour | D．If I have one more hour |
A good storyteller must be able to hold his listeners’ curiosity__________he reaches the end.
| A．when | B．unless | C．after | D．until. |
The fire was finally brought under control,but not
__________heavy damage had been caused.
| A．before | B．after | C．since | D．as |
.Most students used to listen to their teachers in class and completely obey their teachers，__________?
| A．used they | B．weren’t they |
| C．didn’t they | D．did they |
—Why is Tom absent?
—He must be sick，__________?
| A．isn’t he | B．must he |
| C．is he | D．mustn’t he |
I don’t think he could have done such a stupid thing last night，__________?
| A．do I | B．could he |
| C．did he | D．has he |