If we all make a contribution to ________ the environment, the world will become much more beautiful.


  1. A.
    protecting
  2. B.
    protected
  3. C.
    protect
  4. D.
    protects
A
點撥：此題考查to的不同用法。make a contribution to是“為……做貢獻”，to是介詞，其后接名詞、代詞或動名詞。只有A符合此用法。
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l Don’t leave the tap running.
l Turn off lights when you leave a room.
l Turn off your computer every night.
l Wash your clothes, and yourself, in warm or cold water, not hot water.
l Dishwashers use as little water as possible.
If we all do at least 2 of these all the time, we can make a big difference.
【小題1】Was the first Earth Day set up in 1970 ?                       
【小題2】When is Earth Day?                             
【小題3】How many countries planned big events in 2007 ?                     
【小題4】What should people do when the water keeps running from a tap?      
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Everyone can help to save paper. If we all think carefully, we can help protect trees. But we should do it now, before it is too late.

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