题目内容

Large quantities of polluted water_____ into the sea so that lots of fish died.

A. is flowing   B. was flowing    C. are flowing     D. were flowing

D


解析:

quantity作主语时,谓语动词要与quantity的单复数保持一致, 此处quantity为复数,再由后一句的时态可知答案为D。

练习册系列答案
相关题目

违法和不良信息举报电话:027-86699610 举报邮箱:58377363@163.com

精英家教网