4. If we want to look after the environment, there are certain things we should and shouldn't do. Complete these two lists in suitable ways.
We should:
……….paper, bottles and clothes.
……….tropical rainforests. more trees.
……….water and energy.
We shouldn't:
……….paper, bottles and clothes.
……….the ozone layer.
………. water and energy.
……….tropical rainforests.

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