It is not their interest but the need of the market __________ influences students' choices of college majors.
| A．that | B．which |
| C．what | D．who |
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 |
Staying in hospital and taking special medicines __________ drug users an opportunity to stay away from drugs, which is __________ the key to breaking the addiction to drugs lies.
| A．serves; where | B．provides; what |
| C．give; that | D．allow; where |