如果没有水会怎么样提几条节约用水的建议英语

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What will happen if there is no water?
1 turn off the tap after you finish using the water
2 reuse the water:use the same water to wash the face ,wash the clothes,and water the flowers.
3 use just enough water to drink
4 use the same water to clean the WC.
5 try to use the rainwater
6 try to use the riverwater.