Now in our country plenty of rivers and lakes ------ Ahave polluted B are pollutingC have been polluedD has been pollutednow不是现在进行时的标志吗为什么不选B

分类: 作业答案 • 2022-01-02 15:48:56

问题描述：

Now in our country plenty of rivers and lakes ------ Ahave polluted B are polluting
C have been pollued
D has been polluted
now不是现在进行时的标志吗为什么不选B

答

Now in our country plenty of rivers and lakes ------ Ahave polluted B are pollutingC have been polluedD has been pollutednow不是现在进行时的标志吗 为什么不选B