Living on Earth is like living in a terrarium (玻璃容器). All the water on 1 has always been here. The water never goes away and new water is never created. You might say the water is 2. Yes. Water changes its form as it moves through the 3 cycle, from liquid (液体) to solid, then to gas. The cycle happens all over again and again. The water cycle 4 to purify (净化) the water. However, once the soil and air are polluted, it is harder for the water to get clean.

    More than 70％ of the human body is water. Next to oxygen, water is the most 5 part of our life. We drink water. We bathe and shower in water. Each person 6 about 70 gallons of water each day.

    Out of all the water on Earth only 1％ is flesh water. We can all help protect water by doing things like 7 the tap when we brush our teeth.

    Water can get polluted by many different things. Sometimes it 8 when people are careless with the chemicals. Every year thousands of people get sick from 9 water. So everyone must work together to 10 water clean. Our lives depend on it!

    I like pandas very much. They are very 1. Many of them live in Sichuan, 2. Pandas are beautiful animals. They are white and 3. They have big bodies(身体), 4sometimes they can also be quick. Pandas like to eat bamboo 5. They also like to sleep.

    Sometimes pandas go to other countries(其他国家). People there6 like pandas very much.

    There are not many pandas in the world. Now people know they are 7danger. They hope to help pandas 8 a good life. My uncle works in a panda center. It's9to go to the center. I can 10 many cute pandas there.

    John comes from England. When he comes to China, his friends tell him something about the traffic 1 in China. People drive on the2 in England, but in China, people should drive on the right. Before you cross street, you must look 3 ways look left, look right and look left again. 4 remember the traffic moves on the right in China, or some cars and some buses may5 you.

    In the morning and the evening. when people go to work and 6 back from work, the streets are very busy(累忙的). 7  it is the most dangerous(危险的)time. When you want to 8 the road, you must 9 for the green "walk" sign.

    In China, you can always  10  the policeman for help when you lose your way.