第140页

信息发布者：
surveys
formed
harmful
empty
recycle
are protected
will be discussed
will be built
Is
covered
are closed
We should try our best to protect the environment.
Turnoff the tap when brushing teeth.
Don't forget to use both sides of the paper.
Trees keep soil in place during storms. They can provide home for animals too.
I think our city will look nicer with more trees around.
Trees can reduce dust and keep the air clean.
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