Question

There're one ________ students in our school, but six ______ them are girls.

1. A.
   thousand; hundred
2. B.
   thousands; hundreds
3. C.
   thousand; hundred of
4. D.
   thousand of; hundred

Answer 1

C
hundred前面有具体数词修饰不加s，six hundred of them指的是“他们之中的六个”表示其中的一部分。