问题补充：
With the development of modern agriculture and industry, waste are created every day.
A. a large quantity of
B. large quantities of
C. a large number of
D. large numbers of
答案：
A. a large quantity of
(答案→)B. large quantities of
C. a large number of
D. large numbers of
解析：句意：随着现代工农业的发展，每天都会产生大量的垃圾。选项A、B用来修饰不可数名词，C、D用来修饰可数名词复数。a large quantity of 修饰不可数名词时，谓语动词用单数形式，而large quantities of 修饰不可数名词时谓语动词用复数，也就是说，修饰不可数名词时，谓语动词的单复数取决于quantity。
