Ifthefactory         theriver,therewillbenofishinitsoon...

问题详情：

If the factory          the river,there will be no fish in it soon.

  polluting  ing polluting   left polluting   es to pollute

【回答】

What really flatters a man is          you think him worth flattering.

      her        

知识点：动词时态与语态

题型：选择题