"Do you know..." już jest pytaniem, więc reszta powinna mieć strukturę zdania twierdzącego.
Where is that wonderful girl who I met yesterday from? (Where is she from?)
Do you know where that wonderful girl who I met yesterday is from?
Where does he work?
Do you know where he works?
Does she like me?
Do you know if she likes me?
What time is it?
Do you know what time it is?