Ⅰ. 用所给词的适当形式填空
1. Those who have made great contributions (contribute) to human beings and society will never be forgotten.
2. Pollution (pollute) is just one of the disadvantages of living in the town.
3. As we all know, the growth (grow) of crops depends on sunlight.
4. Public worries are the threats of the very existence(exist) of the nuclear power industry.
5. If we use recycled (recycle) materials, we will cause less pollution to the earth.
6. It’s the best result that could be expected under the circumstances (circumstance).
7. Our company has a commitment (commit) to quality and customer service.
8. What she advocates (advocate) is discovering our strengths and using them to become successful.
9. As an educator(educate), I want to see my students succeed.
10. Breathing in some fresh air in the morning can refresh (fresh) ourselves.
