The car ran into a crowd of middle school students ,_____to hospital immediately.
问题描述：
The car ran into a crowd of middle school students ,_____to hospital immediately.
A .two of whom sent
B .two of them sent
C .two of whom are sent
答
B对,是独立主格.具体复习一下独立主格的知识点.本来c也对的,但时态不对,are要改成were