Then people began to c down trees and build factories.but now the pollution is getting more s .Then people began to c ___ down trees and build factories.but now the pollution is getting more s___ .
问题描述:
Then people began to c down trees and build factories.but now the pollution is getting more s .
Then people began to c ___ down trees and build factories.
but now the pollution is getting more s___ .
答
cut砍
答
cut
serious