Forests keep water from —— away （流失）.那个横线是不是填running.

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• Forests keep water from —— away （流失）.那个横线是不是填running.
• Forests keep water from —— away （流失）.那个横线是不是填running.
• The dead leaves on the ground also keep the water from running away.
• Forests help to keep water from running away,________ drought does not often happen.