Watch for details. Check your answers to Before You Watch.Only ( ______ ) of Earth’s water is fresh, and most of that is snow or ice.
So we have only ( ______ ) in rivers and lakes to use for drinking, washing, and other things.
You need ( ______ ) liters of water to make one cotton T-shirt. With that much water, a person can drink for ( ______ ) days.
You can use about ( ______ ) liters of water to wash your clothes. 空1选项：1、3%2、15%空2选项：1、1%2、5%空3选项：1、2702、2,700空4选项：1、902、900空5选项：1、1502、1,500