. We _______ have proved great adventures, but we have done the greatest march ever made in the past ten years.
| A．needn’t | B．may not | C．shouldn’t | D．mustn’t |
When and where to build the new factory_______- not yet decided yet.
A. is B are C. has D. have
Could you please________-me a clean shirt from my bedroom ?
A. take B bring C. fetch D. carry
We all need knowledge from the past — ______ it comes from personal experience or from studying history. It is our only guide to the future.
| A．as | B．whether | C．how | D．when |
The patient has tried quite a few kinds of medicine, but ______ had any effect on his disease.
| A．none | B．nothing | C．neither | D．no one |
I wouldn’t eat potatoes unless I’m really starving, in _______ case you eat almost anything.
| A．whose | B．one | C．what | D．which |