首页 / 高中英语 / 试题详细
  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 中等
  • 浏览 2138

— Why does the lake smell terrible?
— Because large quantities of water______.          

A.have polluted B.is being polluted
C.has been polluted D.have been polluted
登录免费查看答案和解析
相关知识点

—Whydoesthelakesmellterrible?—