Rebecca wants to know more about trees and how they help us. Dr. Jones is telling her something 1.trees.

Trees help in many ways. They keep the air cool and clean. They take in 2. (harm) gases from the air and produce oxygen for us 3.(breath). They are major 4.(fight) against air 5. (pollute). Besides, trees can also make our lives even 6. (convenient). Many of the things in our daily lives come from trees. For example, paper and pencils. 7. (actual), we get a lot more from trees. We get fruit and oil from them. Tea also comes from the leaves of trees. Look around this room. Most of 8.furniture is made of wood. Trees are really important in our daily lives. So we can’t imagine what the world would be like 9. there were no trees.

However, we cut down millions of trees every year. We must stop 10. (protect) them if we don’t want a world without trees.

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