The picture mirrors a phenomenon that pollution is becoming increasingly severe. This picture demonstrates a phenomenon that is well-known to us all.
It is high time that we should take moves. (took moves) It is imperative that we (should)take moves.
Tangible is teaching, looking at his students,( ).
随着社会的发展：with the society ( )， (develop)
随着问题变得严峻：with the problem ( )severe， (become)
综上所述：with all the analysis above ( )into account， (take)
解释问题的原因：the reasons( )the problem. (account for)
环境扮演的角色：the role( ) by the environment. (play)
要考虑的因素：the factors ( ). (consider)
5. As, which 引导的非限 （一个简单句只能有一个谓语动词）
As is graphically depict by the cartoon, a couple is boating, throw rubbish into the lake, with the caption disclose the theme of environmental consciousness, which is thought-provoking. (改错）