The surgeon_______ his excellent skill in carrying out the operation.
| A．represented | B．instructed | C．demonstrated | D．exhibited |
John _____ knowledge of radio just by staying around the radio station.
| A．caught on | B．worked up | C．took up | D．picked up |
With sufficient scientific information a manned trip to Mars should be _____.
| A．obtainable | B．potential | C．considerable | D．feasible |
At first the institute refused to purchase the telescope, but this decision was _____ revised.
| A．occasionally | B．consequently |
| C．successively | D．subsequently. |
_____ inviting guests and not treating them properly!
| A．Strangely | B．Fantastically | C．Surprisingly | D．Fancy |
It isn't so much whether he works hard; the question is whether he works _____.
| A．above all | B．in all | C．at all | D．after all |