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求老师解答:根据句意和首字母提示完成单词等问题

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求老师解答:根据句意和首字母提示完成单词等问题
一、根据句意和首字母提示完成单词
1.R     paper is very important to save trees.  
2.We must save the e      animals.
3.That zoo is s      for animals to live in.
4.It’s our duty to protect the e      and make our world more beautiful.
5.We should not p      the environment.
二.用所给单词的正确形式填空:
The old building         (set up) yesterday.
Young people should speak to old          (polite).
3.Most of the trash can         (recycle) in the future. 
 4.Pandas are     (endanger) animals.
5.There are many people      (pick) up apples.
三句型转换:  
1.They are trying to protect the environment .(划线提问)  
              are they trying          
2.We planted many trees in our school yard.(改为被动语态)  
Many trees              in our school yard.  
3.Lucy is an inspiration to us all.(改为同义句)  
Lucy    all    us.  
4.It seems that your mother isn’t happy today.(改为同义句)  
Your  mother                     today.
1.recycling 2.extinct 3.safe 4.environment 5.pollute
1.was set up 2.politely 3.be recycled 4.endangered 5.picking
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