从方框中选择恰当的选项把对话补充完整，把标号填在题中横线上即可。
Bob: Are they ____?
Zhang Hong: Yes, they are. They're very ____. I like them very much.
Bob: Me, too. But I ____ white whales best.
Zhang Hong: Why?
Bob: They're very kind and friendly ____ people. They're clever, too.
They can sing and dance.
Zhang Hong: Listen! Are they ____ now?
Bob: Yes, they are.
根据上下文完成对话。
A:What are you ________?
B: I’m ________ a poster.
A:What’s it __________?
B: It’s about _________and recycling.
A:Can I _______ you?
B: Of course. Welcome.
A:_______ can we draw?
B: We can draw some rubbish.
A:Shall we ________some words?
B: Yes.We can write “Don’t_______them everywhere.”
听录音填空。
I don’t like ______ in the city because it isn’t clean. _______ from cars and factories makes the ____ dirty. Rubbish makes the street dirty and ______. It ____ makes the river dirty. To _____ the city clean, I think we should ______ some factories ______ and put rubbish in the ____. We should not _____ so much or put rubbish in the water.
听录音填空。
（1）They are going to buy new ______ and _____ tomorrow.
（2）On Chinese New Year’s Eve, I ______ _______ with my family.
（3）My grandparents are going to give me _______ _______.
（4）I like _______ ________.
（5）I plan ____ _____ some flowers for my mother.
阅读短文选择填空。
We should ________ more trees. We ______ cut down too many trees. We should stop factories from pouring （倾倒）_____ water into rivers. We should save ______. We should not drive too much. We can go to work or school by bus or ____. We can reuse paper and plastic bags. We can make the world a better（更好）place.
（1）A. water B. plant C. buy
（2）A. can B. should C. shouldn’t
（3）A. dirty B. clean C. much
（4）A.trees B. energy C. water
（5）A. by taxi B. by car C.on foot
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