---Lily,do you konw that man?---I remember ------ him at the

---Lily,do you konw that man?---I remember （B.meeting） him at the party,but I can't tell his name.
你认识那个男的吗?我记得在聚会上见过他的,但说不出他的名字来.
remember doing,记得做过某事.remember to do,记得要去做某事.根据句意,应该是前一种表达.