"Are you a director?"
Why is Müdür müsün? wrong?
OK, I have to edit: when I had this in multiple choice I chose both Müdür müsün? and Müdür müsünüz and was marked wrong because only the plural was right. Then later I got it as an open question so I tried the singular again and it was marked right. Apparently there is a mistake in the rating of the multiple choice version.