Position of prepositions in questions and clauses?
I would like to know if there is any rule to know where prepositions should be placed in questions or clauses. For example, I have heard many sentences and some of them put the preposition in the start and others in the end, but I don't know if there's any rule for this or any recommendation. > Where are you **from**? > Who are you talking **to**? > **To** whom are you talking? > He's the person I was speaking **to**. > He's the person **to** whom I was speaking. >This is the place **from** where you should start.