根据短文内容从方框中选择恰当的单词填空，使短文完整、通顺。有的需要变换形式，每词限用一次。

hot, protect, newspaper, environment, happen, change, hard, he, say, lose

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

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