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2
Make a green plan to keep the place clean.
3
If you want to help the blackbirds come back,you should finish the three tasks.
(如果你想帮助乌鸦返回美丽家园，先完成下面的任务吧！)
... makes ...
What makes the city dirty?
smoke from cars
black smoke from factories
dead fish
rubbish
1
Talk show
We can …
What can we do to keep our city clean?
take the bus and the metro to school
walk to school
move some factories away from our city
put rubbish in the bin
plant more trees
2
put rubbish in the bin
2
throw rubbish on the floor
2
Do you throw rubbish on the floor?
No , I don’t !
I put my rubbish in the bin.
Can we keep our city clean?
Yes, we can!