Every day large quantities of waste water______into river without being cleaned.
问题描述：
Every day large quantities of waste water______into river without being cleaned.
C.are poured
为什么谓语动词要用are?
答
因为,quantities of +名词时,后面的谓语的单复数是看quantities 而不是"名词".就是说只要用quantities of 后面的谓语就要用复数.而且,这里用被动,所以是are poured.