高校问答猪鼻龟和龙鱼:英语问题
来源：百度文库 编辑：高校问答 时间：2024/05/15 06:02:51
2\ there is less pollution in the water because people have planted more trees.
the water ___ ___ ___ ___it is today because there were not so many trees.
改写句子，句意不变
the water ___ ___ ___ ___it is today because there were not so many trees.
改写句子，句意不变
not as pure as
had more pollution than
was more dirty than