We'd better set off or it will be dark __________ we know it.
| A．before | B．after |
| C．when | D．until |
What surprised me was not what he said but _____________he said it.
| A．the way | B．in the way that | C．in the way | D．the way which |
She will have to _____________herself to the new condition.
| A．change | B．fit | C．adjust | D．suit |
In order to get the exact result, the scientists made _______.
| A．a lot tries | B．to do experiments | C．trial and error | D．great try |
It is well known that Thomas Edison _______ the electric lamp.
| A．invented | B．discovered | C．found | D．developed |
One of the provinces _______ the union and formed a new country.
| A．broke away from | B．kept away from |
| C．did away with | D．cut off |