问题补充：
There are about teachers in our school.
A. two hundreds of
B. two hundreds
C. two hundred
D. two hundred of
答案：
A. two hundreds of
B. two hundreds
(答案→)C. two hundred
D. two hundred of
解析：句意：我们学校大约有200名教师。数词表确定的数量时，用“基数词+hundred/thousand/million”的形式，故选C.
