问题补充：
Their school has more than two teachers and students.
A. hundreds of, thousands of
B. hundred, thousands of
C. hundred of, thousand
D. hundreds, thousands of
答案：
A. hundreds of, thousands of
(答案→)B. hundred, thousands of
C. hundred of, thousand
D. hundreds, thousands of
解析：句意：他们的学校有两百多名老师和数千名学生。数词表示确定所指时数量单位不加s,不加of,表示不确定所指时加s,加of,故选B
