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.
⑴Are you crying? A. No. My eyes hurt.
⑵How do we use wood? B. We should plant trees.
⑶What should we do to make the air clean? C. It's on 12th March.
⑷When's Tree Planting Day in China? D. Because we need it to keep us alive.
⑸Why is the air very important? E. We use wood to make beds.
Water is very important to living things. Without water, there must be no life on the Earth. All plants and animals need water. Water is needed in factories, offices, schools, families and many other places. Farmers need water to water the crops and vegetables. Workers need water to make things. Firemen need water to put out the fire.
We must save water. Don't waste it!
