it's our duty to save water, we must do something to save water. for example, we shouldn't pour waste water into the rivers and we should pick up litter around us.
if we don't save water, the last drop of water will be our tear.
fish can't live without water. plants can't live without water. people can't live without water, either. as you can see, the water is very important to us. but now drinking water is less and less. the water was polluted seriously.