37.砍伐森林: cut down the forests

36.保持地球的干净: keep the Earth clean

35.保持…干净: keep sth clean

34.设计海报　 design a poster

33.干某事的一个计划: a plan to do sth…

32.向某人展示某物show sb about sth..

31.你真是太好了干某事

It’s really nice of you to do…

30.也，同样 as well as…

29.几乎没有熊猫 very few pandas.　

28.例如: for example　 / such as…