A short man appeared suddenly in the doorway, and Dave had to pull up __________ so as to avoid bumping into him．
| A．merely | B．sharply | C．shortly | D．desperately |
His test results are not very _____. He does well one week and badly the next.
| A．invariable | B．consequent | C．continuous | D．consistent |
Scientists think they have _____ in their attempt to find the causes of some major dieases.
| A．broken through | B．worked out | C．fallen out | D．got round |
If you ever have the _____ to go abroad to work, you should take it.
| A．possibility | B．offer | C．luck | D．chance |
Carl wanted to play a joke on Bob but gave himself _____ by laughing.
| A．away | B．in | C．out | D．up |
As he had no friends and relatives in the town, the traveler tried to find a _____ somewhere.
| A．log | B．lodge | C．landing | D．lodging |