He _____ his potential had it not been for his desire to meet new challenges.
| A．would never have realized | B．would never realize |
| C．never realized | D．had never realized |
Clinical evidence began to __________, suggesting that the new drugs had a wider range of useful activities than had been predicted from experiments in animals.
| A．operate |
| B．strengthen |
| C．approve |
| D．Accumulate |
Linda didn't get there on time because of the bad weather. What's more, her car was in poor __________.
| A．position |
| B．condition |
| C．situation |
| D．Direction |
—What you've said sounds __________, but can we really solve the problem in that way?
—It is worth a try.
| A．absurd |
| B．awesome |
| C．reasonable |
| D．Shallow |
__________ it to my teacher to take a better-paid post if I can get one.
| A．owe |
| B．belong |
| C．give |
| D．Donate |
John was __________ to learn the news that he was rejected by the committee.
| A．cast down |
| B．cast off |
| C．cast about |
| D．cast away |