Yes.
"Where did you come from?"
"What were you looking for?"
"Who(m) did you do it for?
25 Kasım 2015
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You can say use prepositions with question words as Ed illustrated below, but your example is not correct. 'Where do you study?' contains everything you need, you don't need a preposition.
25 Kasım 2015
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Hâlâ cevap bulamadın mı?
Sorularını yaz ve ana dil konuşanlar sana yardım etsin!