3. 建立;設(shè)立       

2. 不再       

1. 由……制成       

recycle,else,light,off,paper,bike, 

turn,napkin,ride,agree 

A: Saving endangered animals is one thing we can do for our world. What 1.      can we do to save the planet?

B_: There are many other things we can do. We can 2. books and paper. We can 3.         4.        the shower while we are washing our hair.

A：Yes,you are right. We can also turn off the 5.        when we leave a room. We shouldn't use 6.        towels or 7.        ,

B_: I 8.      But it's hard to stop 9.        in cars.

A: We can go to school or go to work on our 10.      .

B_: Yes,that's true.

5. We must do something to save the wild animals. (改為同義句) 

Something must        to save the wild animals.

4. Greeting each other with a smile is necessary in our daily life. (改為同義句)

       is necessary        greet each other with a smile in our daily life.

3. We planted many flowers in the neighborhood. (改為被動語態(tài)) 

Many flowers        by us in the neighborhood.

2. The animals are given food three times a day. (對畫線部分提問) 

          are the animals given food?

1. The tiger eats about 20 pounds of meat a day. (對畫線部分提問)                      meat does the tiger eat a day?

(   ) 5. To protect trees,we shouldn't use paper towels (紙巾)     

napkins.

   A. or   B. and   C. but   D. with