综合填空

into   cut   measure   important   from   harmful   green  more   affect   by

Trees are    . However, people have     down too many trees. A lot of rich land changes    desert. How can that   the weather? Trees can stop the wind     blowing the earth away. A lot of water can be saved    forests. What’s   , they can also prevent the water from washing the earth away.
Cutting down trees is     to human beings. We should take many     to plant trees.
Let’s be a     person!