The most important drink is water. Not many people understand this but it is quite true. People can l{#blank#}1{#/blank#} for a long time without food, but they will die in two or three days w{#blank#}2{#/blank#} water. In h{#blank#}3{#/blank#} weather, many people do not drink e{#blank#}4{#/blank#} water, because they don't know how much water they n{#blank#}5{#/blank#}. After taking exercise, people need more w{#blank#}6{#/blank#}. The water in the man's body is m{#blank#}7{#/blank#} more than other matters. We'd b{#blank#}8{#/blank#} have enough water, or we may get ill.

    Water is necessary to all the living things. "There will be no l{#blank#}9{#/blank#} if there is no water."

    So we must save water and don't w{#blank#}10{#/blank#} water.