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第63页

信息发布者：

utting

il

aper

lastic

reuse

waste

drink

eat

to write

glasses

making

B

C

C

A

B

There isn't much coal on Earth.

I can reuse paper to make a box.

All students should know this.

Trees help keep the air clean.

How can we reuse these things?

save

reuse

waste

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