I like swimming, while what my brother enjoys ____.
| A．cooking | B．to cook | C．is cooking | D．cook |
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 |
Mrs.Black doesn’t believe so many people are suffering from this tsunami，__________?
| A．aren’t they | B．are they |
| C．doesn’t she | D．does she |