摘要:Ⅱ. 情景交际.从方框中选出适当的句子补全对话.其中有两项是多余的. A: Lucy, why are you going out 21 ? B: That’s the sound of a truck collecting rubbish. A: Do you mean you have to take the rubbish to the truck? B: Yes. You know 22 is our duty. We should help protect the environment. A: I agree. 23 , we must do something around the neighborhood. B: Sure. It is our duty to keep the environment clean and tidy. If we make a contribution to protecting the environment, 24 A: That’s right. We mush try our best to make our country more beautiful. So we should 25 to improve the environment. A. before listening to music B. the world will become much more beautiful C. do anything useful D. after hearing the music E. Wherever live F. taking care of the environment G. do something useful 21. 22. 23. 24. 25.

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