He is the only one of the students who ______a winner of a scholarship for three years.
| A．is | B．are |
| C．have been | D．has been |
The generation _____ makes it difficult for parents to understand their children's opinions.
| A．division | B．gap | C．separation | D．interval |
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 |