Early to bed and early to rise makes a man healthy, wealthy (富有) and wise (聪明). This is an old English saying. It means that we should go to bed early at night and get up early in the morning. If we do, we shall be healthy. We shall also be rich and clever.

Is this true? Perhaps it is. The body must have enough sleep. Children of your age need ten hours' sleep every night. If you go to bed late, you can't have enough sleep. Then you can't think carefully and your homework will be wrong. You will not be wise and you may not become wealthy!

Some people go to bed late at night and get up late in the morning. This is not good for them. We should sleep at night when it is dark. The dark helps us sleep well. When the daylight comes, we should get up. This is the time for exercise. If the body is not used, it will become weak.

Exercise keeps it strong. Exercise helps the blood (血液) to move around inside the body. Blood takes nutrition (营养) to all parts of our bodies. The brains (大脑) in our heads also need blood. We think with our brains. If we keep our bodies healthy, and take exercise, we can think better!

Our bodies also need air to breathe (呼吸). Without air we will die. Get up early in the morning and we can have plenty of clean, fresh air. That will keep us healthy and happy.

Trees are very important to not only people but also many animals. Here are some reasons why trees are so important.

Trees provide oxygen for every living thing. {#blank#}1{#/blank#}

Trees are like natural air filters（过滤器）. Trees take in CO₂ ， and provide oxygen. They help clean the air. {#blank#}2{#/blank#}

{#blank#}3{#/blank#}According to a study，the temperature under a large tree can be about 3℃cooler than the surrounding temperature. So we will feel cool under the trees. Trees also protect us from noise pollution.

Trees are so important，but people on the Earth don't do enough to protect them.

{#blank#}4{#/blank#}Many forests are disappearing. The trees are used to make furniture，paper，medicine and so on.

I think we must do our best to protect trees. {#blank#}5{#/blank#}But we must cut down trees in a proper way. When we cut down one tree，we should plant more trees. In that way，there will always be trees on the Earth. If we don't protect trees，all the forests will disappear. We should never let that happen.

Hi, My name is John Walsh. I'm1 Alberta. Do you know where Albert a is?2 a beautiful place in Canada. I'm a Grade Seven student. There are about 20 students in my class. My3 are very nice. They are11 to 12 years old. We all like4 . And our favorite sport is basketball. We often 5 it after school. It helps to keep us healthy and it's6 . My classmates and I want to make some pen friends. 

We want to 7 about books, sports and things at school with you. You can write to us at777friends@gmail. com. In your8 , please tell us about you. How old are you?9 do you come from? What's your favorite thing to do? And you can also ask us 10 . We are happy to tell you things about us. We hope (希望) to get your e- mail soon!