基本句子结构：
不及物动词可以通过跟介词或副词结合构成及物用法。
VI + Prep = VT approve of, deal with, look into, complain about, result in, lead to, dispose of, subscribe¹ to, side with, contribute to, give up, appeal to

6. ________________________ may _________________________________.
过量使用肥料和杀虫剂可能导致环境的恶化。

7. I can hardly ________________ the latter opinion for the following several sound reasons.
我很难认同后一种观点，理由有以下几方面。

8. Art _________________ the ______________________ of the lives of people.
艺术丰富人们的生活。

9. Cultural development contributes to the __________________ of a country as a modern, __________, and _______________ society.
文化发展展示了一个现代、充满活力和展望未来的社会。

答案：
6. Overuse of fertilizers and pesticides², give rise to the deterioration³ of the environment
7. side with
8. contributes to, enrichment
9. image, dynamic, forward-looking