She didn't remember _______him before.

问题描述:

She didn't remember _______him before.
A.having met B.have met C.to meet D.to having met

C(D),排除.因为已经见了,TO的话,是记得去做某事.
remember +doing=已经做了的记得的(这里是忘了,因为否定)
A.