急,想办法think of a plan to make our city cleaner a急,想办法think of a plan to make our city cleaner and greener.

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急,想办法thinkofaplantomakeourcitycleanera急,想办法thinkofaplantomakeourcitycleanerandgreener.急,想办法thinkofap

急,想办法think of a plan to make our city cleaner a急,想办法think of a plan to make our city cleaner and greener.
急,想办法think of a plan to make our city cleaner a
急,想办法think of a plan to make our city cleaner and greener.

急,想办法think of a plan to make our city cleaner a急,想办法think of a plan to make our city cleaner and greener.
when you go out try to use the vehicles such as bus and metro as they have less tailpipe emission compare to private car.another way is plant trees around buildings they can purify the air,on the other hand it can avoid global warming occur.

想出一个计划,让我们的城市更干净、更环保。

no way!!!!