Everyone in our class was working hard and doing what we could _______ a good university．
| A．enter | B．to enter | C．entering | D．entered |
We could see nothing in the thick fog at a _____ of two meters, so we got lost.
| A．length | B．distance | C．space | D．way |
—Did you have _____ fun in Australia?
—Sure. It was _____ unforgettable experience.
| A．a; an | B．/; the | C．the; an | D．/; an |
My parents always let me have my own ____of living.
| A．manner | B．method | C．way | D．fashion |
If by any chance someone comes to see me, ask them to leave a________.
| A．message | B．letter | C．sentence | D．notice |
The new law would come into ___on the day it was passed.
| A．effect | B．use | C．service | D．existence |