11. China is becoming more and more prosperous because of the reform and “opening up” policy.
由于实施了改革开放政策，中国变得更加繁荣了。
12. We all need clean air to breathe; we all need clean water to drink; we all need green places to enjoy.
我们都需要呼吸清新的空气，我们都需要饮用洁净的水，我们都需要绿地来享受。
13. Let's work together to make our world a better place.
让我们一起努力把世界变得更加美好。
14. We should make full use of our time to do useful and productive things.
我们应该充分利用好时间去做有用的、富有成效的事。
15. We should get into the good habit of using our time wisely.
我们应该养成一个好习惯，明智地利用时间。
16. What I really want to know is whether he will go abroad next month?
我的确想知道的是，他是否会在下个月出国。
17. Television is harmful to developing minds.
电视不利于开发心智。
18. Children usually have far more potential than their parents had realized
孩子们都有很大的潜能，而父母却没有意识到这一点。
19. In the past 10 years, great changes have taken place in our school.
在过去的10年里，我们学校发生了巨大的变化。
20. People who spend more time with their families are usually healthier and happier.
那些花更多时间和家人在一起的人通常会更健康更幸福。