There are many ways to save the environment. In this passage, you can learn some ways.

    Plant more trees.

    (挑选) a right ground near your house or workplace. Unless there's any rule(阻止) you from growing trees in that area, go ahead and grow trees. Plant a tree every month and(鼓励) your friends to join you. Have more and more trees planted and there will come a day when you have green(陆地).

    Walk more and drive less.

    Choose to walk rather than to(驾驶) your car. Walk or ride a bicycle to work if it's not very far. Not only cycling but also walking is good exercise, And each time you avoid using your car, you're doing something(有帮助的) to cut down on air pollution. You are saving fuel, saving money and keeping fit as well.

    Save water.

    Water is very(重要的) to living things. We use and pollute it. The simplest way to save water is turning off water taps(在...之后) using water. When you visit a beach, make sure that you don't throw waste around. Don't pollute rivers by dropping(垃圾) or other waste. Water is so precious, so we (一定不要) waste or pollute it.

    Rock climbing is a popular hobby that many people enjoy doing. You can do it indoors on special walls or outdoors on real mountains. There are many advantages of rock climbing--it is fun and it also helps people forget worries.

    The most important equipment(装备) to have is good shoes. They need to be half a size smaller than your usual size. The next thing you need is a harness(保护带). This allows you to move freely, but will hold you up if you fall. It's important to know how to use your equipment. If you are a beginner, it's best to have lessons. A climber with experience can help you a lot in the beginning.

    Rock climbing is very exciting for people of different ages. Climbers, however, must be careful not to pollute the environment. Sometimes rock climbers leave rubbish on the mountains where they climb. They should take it with them and throw it away. This will allow future climbers to enjoy a clean environment.

— (塑料).

White lines the playing area several sections.

Everyone a great future.

    March 22nd is World Water Day. It started in 1993. It not only makes us think about the importance of water, but also calls on us to1and protect water. Today, we're facing terrible water problems. Among them, Wastewater problem is especially2. And the subject of World Water Day in 2017 is "wastewater".

    What is wastewater? It is used water. Usually, wastewater comes from homes,3, hospitals and so on. It is produced by different kinds of activities, including washing the machines, taking showers and. using the kitchen. The rain also4wastewater when it is running down the street during a storm. No matter where it comes from, this kind of water is sure to have5harmful in it,

    6must we treat (处理) wastewater? Wastewater has a big influence on our life. It causes both illness for us, and pollution for the environment. We must care for our environment and our own7.

    How can we treat wastewater? Different kinds of wastewater need different ways of treatment. Wastewater8homes can be reused. Then there will be9wastewater. Also, factory wastewater has to be cleaned10it goes back to nature.