第62页

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What made our city dirty?
Rubbish made the streets messy and dirty.
There was rubbish in the water and the fish were dead.
What can we do to keep our city clean?
We can put rubbish in the bin.
Black smoke from factories
made the air dirty
throw rubbish on the floor
plant more trees
to keep the city clean
walk to school
takes the metro to school
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