问题补充：
There are food on sale in the trade fair.
A. a great many
B. lots of
C. a great deal of
D. large quantities of
答案：
A. a great many
B. lots of
C. a great deal of
(答案→)D. large quantities of
解析：A. a great many许多，修饰可数名词；B. lots of大量的，修饰可数或是不可数名词； C. a great deal of 许多，修饰不可数名词； D. large quantities of大量的，可接可数或是不可数名词，但无论接那种，谓语动词都用复数形式，故选D.句意：在商品博览会上有大量的食物在出售。
