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第89頁(yè)

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many beautiful parks.

 There are many trees and flowers in the parks.

 there is rubbish on the ground.

 from cars

 the air dirty

litter on the ground.

We should plant more trees and flowers. We should take public transportation instead of

private cars to reduce smoke emissions. We should also participate in city cleaning

activities regularly. Only in this way can our city become more clean and beautiful.

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