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We should not . We should and
it.
useful
use
clean things
much water
waste water
reuse
save
Save water
We should not
coal and oil
of our energy comes from .
is not much coal or oil .
We should .
save energy
drive so much
on Earth.
Save energy
Most
There
because cars use
a lot of energy.
We should not cut down too many
trees because trees help keep
the air clean.
Wood comes from trees.
We use wood to make tables, chairs
and many other things.
Wood comes from trees.