—Why was Professor Johnson unhappy those days?
—Can't you see it clearly? The only reason was that the theory he stuck to_____ wrong．
| A．proving | B．being proved | C．proved | D．was proved |
_____ of the students who took part in the military training is 450.
| A．A number | B．A lot | C．Lots | D．The number |
This is only request that the room ________ after being used.
| A．be cleaned | B．would be cleaned | C．is cleaned | D．will be cleaned |
Whoever _____ a new idea of how to work out the puzzle will be given a prize.
| A．comes up | B．comes up with | C．comes out with | D．comes with |
I shall never forget those days ______ I spent with the earthquake victims(受害者), _____ has a great effect on my life.
| A．that; which | B．when; that | C．which; that | D．when; who |
--- I’m afraid that she won’t come to help me as she promised.
--- Don’t worry. Nothing will _____ her mind if she has _____ up her mind.
| A．change; made | B．turn; done | C．grow; given | D．make; changed |