Excellent warm-up for your oral exams: interactive one-sided dialogue.

http://englishconversations.org/interactive-stories/

http://englishconversations.org/2007/03/08/nurse-story-an-example-of-an-interactive-story/
http://englishconversations.org/2009/08/31/water-car-4-an-example-of-an-interactive-story/