Previous and next buttons

Just curious…I have a quiz in Flash that adds points whenever they get the question right…all questions are input boxes they type in. they can’t finish the test right now until they get them all right one by one. is there anyway to have a next button that will go on to the next question and when they get to the end, if they haven’t answered them all start back and show only the ones they haven’t answered? clueless about how this would work. Hope someone can point me in the right direction