![](https://cos-cdn.shuashuati.com/pipixue-web/2020-1231-2005-12/ti_inject-812ce.png)
Sooner or later the forests will disappear ______
A.
if people don't stop cutting trees
B.
unless a country has a plenty supply of trees
C.
unless all people the importance of planting trees and the government has good system of control.
D.
if man doesn't stop cutting trees carelessly