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If you_____ time, please write to me.

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We’ll get wet if we ______ out.

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If the sea water continues to be polluted, many fish species ______ extinct.

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The plants ____ if they don’t get sunlight and water.

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If you are exposed to noise above 80dBs in a long time, you _____ hearing problem.

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If we _______ all waste more carefully, dangerous chemicals ______ get into our water supply.

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All the aquatic plants and animals will die if the factory _______ dumping poison into the lake.