On Sunday morning, Mark, Rose and I take a bus to go {#blank#}1{#/blank#}. Now we are in the shop. We'd like {#blank#}2{#/blank#} something for a picnic. We want buy three {#blank#}3{#/blank#} of water and some {#blank#}4{#/blank#}. We don't have bags, so we need to buy some new{#blank#}5{#/blank#} . Then we can take the food to the hill.

    The second man complained every other mile, his back pain got more and more {#blank#}1{#/blank#}. On the 5^th mile, he couldn't stand it any more and fell down on the grass. “My back is hurting me so badly. I can't go any{#blank#}2{#/blank#} because of the pain and it is all because we had to carry that silly woman across the river!” Out of{#blank#}3{#/blank#}, he asked “Why aren't you complaining about it? Doesn't your back hurt?”

    “Of course not.” The first man replied. “You have been carrying the woman since we left the river bank. But I set her down five miles ago.”

    We are often like that second man who keeps on complaining and can't get over the pain of {#blank#}4{#/blank#}. Years later, we will still be carrying the burden, worn out and can't go any further.

    A kind of little cars may some day take the place of today's big ones. People will like this kind of small cars more and more. The car is as small as a bike but can {#blank#}1{#/blank#} two people in it. Everybody can drive it, just like riding a bike. Even children and old people can drive them to school and {#blank#}2{#/blank#}.

    If everyone drives such a car in the future, there will be less {#blank#}3{#/blank#}in the air. There will also {#blank#}4{#/blank#}more space for all the cars in cities, and the street will have more space for people to walk. Three such cars can fit in the space now needed for one car of the {#blank#}5{#/blank#}size.

    The little cars of the future will cost much less {#blank#}6{#/blank#} to own and to drive. And they can go only 65 kilometers an hour, so driving will be safer, too.

    The cars of the future will be fine for {#blank#}7{#/blank#} around a city, but they will not be useful for a long trip.

    This kind of cars can save a lot of gasoline( 汽油 ). They will go 450 kilometers {#blank#}8{#/blank#} needing to stop for more gasoline.

    If big cars are still used along with the small {#blank#}9{#/blank#} , two sets of roads will be needed in the future. Some roads will be needed for the big, faster cars and other roads will be needed for the small, {#blank#}10{#/blank#} cars.

    For most of us in China, we only have to turn on the tap to get clean water. We seldom think twice about where it comes from.

    Day after day, thousands of children in poor countries have to{#blank#}1{#/blank#}hours walking for miles to collect water. What's more, the water is dirty and can cause serious diseases, such as diarrhea(腹泻). It's hard to believe, but every 20 seconds a child dies as a result of a water-related disease.

    The international water-aid charity called Just a Drop{#blank#}2{#/blank#}clean water to some of the poorest areas in the world, by building wells, pipelines(永管)and toilets. The charity has helped about 1.5 million people {#blank#}3{#/blank#}.

    Betty, from Uganda, is just one of the people who have been helped by Just al Drop. 11-yearold Betty had to walk two miles every day, carrying two heavy cans{#blank#}4{#/blank#}dirty pond water before Just a Drop placed a well in her village. "I used to get sick from the water. Now, I don't have to walk long distances and I feel much safer with this clean water."