Today many trees in forests are cut down. A lot of land has become desert (沙漠). If you read  {#blank#}1{#/blank#} you'll learn that the forests on the .earth are getting smaller all the time. Some scientists {#blank#}2{#/blank#} that there will not be any great forests in 20 or 30 years.

    What will {#blank#}3{#/blank#}  if all forests disappear? A 10t of plants will die and animals will {#blank#}4{#/blank#} their home. Farmland will soon {#blank#}5{#/blank#} into desert. There won't enough rain and the weather will be  {#blank#}6{#/blank#} and dry. The life will be {#blank#}7{#/blank#} for everyone. Our living {#blank#}8{#/blank#} will become worse and worse. It is our duty to {#blank#}9{#/blank#} the forests. Everyone should try {#blank#}10{#/blank#} best to take care of forests. Stop cutting down trees and make the world greener!

Look! There are {#blank#}1{#/blank#} {#blank#}2{#/blank#} planes in the airport.