The old lady when I was in the countryside is said to be still very much alive though in h

问题补充：

The old lady when I was in the countryside is said to be still very much alive though in her nineties.

A. after whom I looked

B. whom I took care

C. who I looked after

D. of whom I took care

答案：

A. after whom I looked

B. whom I took care

(答案→)C. who I looked after

D. of whom I took care

解析：此定语从句的正确说法是whom I took care of/whom I look after。take care of/look after 是固定短语，介词of/after在定语从句中不能提前。