Употребите верно личные местоимения в косвенном падеже (me/ us/ him/ her/ them/ it)
I don't know Sarah's parents. Do you know ...?
Where is Ann? I want to talk to ....
I want that book. Please, give it to ....
We're going to the conference. Are you going with ...?
Steve is gloomy today. What is the matter with ...?