Question

-Do you know the girl in red?

-She seems to ________ me at last month’s party．But I’m not sure．

1. A.
   introduce to
2. B.
   be introducing to
3. C.
   be introduced to
4. D.
   have been introduced to

Answer 1

D
动词不定式的完成式表示发生在主要动词之前的动作，“被介绍给我”是上个月的事，发生在seems之前。