shestudying English for l hour every day?

He didn't know the city very well,  ?

    The first Earth Day was in 1970. People were beginning to worry a  what we were doing to our environment. So they set up Earth Day to tell e about their worries.

    In 2007 organizers all over 150 c planned over 4,000 big events. But Earth Day is not just about marches(游行) and big events. In the week around Earth Day (22 April) there were t of smaller, local events. These events dealt with environmental problems in the neighbourhood.

    he World Wide Fund for Nature made a list of f things that each person could do to save the environment.

    Don't leave the tap running.

    Turn off lights when you l  a room.

    Turn off your computer every night.

    Wyour clothes, and yourself, in warm or cold water, not hot water.

    Dishwashers use as little water as possible.

    If we all do at least 2 of these all the time, we can make a big difference.

    There is a sign at a Korean university asking tourists not to step into the grass to take photos. The sign is not  in Korean or English; it is written in Chinese.

    These signs, and signs in other countries warning Chinese tourists about their behaviour, have shamed many Chinese who worry  the image of the country.

    Over 70 million Chinese tourists made overseas trips last year and spent $102 billion, more than the $ 84 billion spent by American and German tourists. For many Chinese tourists, it was their trip abroad and they didn't know about foreign ways. And some of these tourists took their bad habits from China with .

    Waste can be seen everywhere in the school. Some students ask for more food than they can eat and others often forget to 1the lights when they leave the classroom. They say they can afford these things. But I don't agree2  them.

    Waste can bring a lot of problems. Although China is rich in some resources, we are short of others, for example, fresh water. It is reported that we will have no coal or 3 to use in 100 years. So if we go on wasting our resources, what can we use in the future and where can we move? Think about it. 1 think we should say   4to the students who waste things every day. Everybody should stop 5 as soon as possible.

    In our everyday life, we can do many things to prevent waste from happening, for example, turn off the water taps when we finish washing, turn off/he lights when we leave the classroom, try not to order 6 food than we need, and so on. Little by little, everything will be changed. Waste can be stopped one day, if we do our 7 .