The old clock needs every day, otherwise it will stop working.
| A．to turn up |
| B．to wind up |
| C．winding up |
| D．wind down |
-Coach, can I continue with the training?
-Sorry, you can't __________ you haven't recovered from the knee injury.
| A．until | B．before |
| C．as | D．unless |
You can't be careful enough to drive on the __________ road in __________ weather.
| A．freezing; frozen | B．freezing; freezing |
| C．frozen; freezing | D．frozen; frozen |
That is the only way we can think of __________ the overuse of chemicals in agriculture.
| A．reducing | B．to reduce |
| C．reduced | D．reduce |
Many developing countries are unwilling to pursue their economic development __________ destroying the environment despite there being several financial crises.
| A．at the risk of | B．at the cost of |
| C．at the end of | D．at the mercy of |
The athlete's years of hard training __________ when she finally won the Olympic gold medal.
| A．went on | B．got through |
| C．paid off | D．ended up |