My name is Amy. Tomorrow is Saturday. We have no classes. My parents aren't going to work, but we are going to be very busy tomorrow. My mother is going to buy something for next week. My father is going to visit my aunt and uncle. I'm going to the bookstore by bus. Then I'm going to buy a dictionary. Tomorrow evening we are going to visit my grandparents and have a big dinner. After that we are going to the cinema. I think we are going to have a nice weekend.

We can get wood from trees.

So please plant more trees.

Trees make our city beautiful.

They keep the air clean and cool.

We can use wood to make paper, desks and chairs.

The Earth is a place. There are , rivers, mountains and . Some parts of the Earth are hot, but some parts are very cold. There are many kinds of and plants on the Earth. Some are , but some are small. Today some parts of the Earth are very . People throw into the rivers. Some people cut down too many trees. They pollute the , the water and the . It is important for us to the Earth.