I have had 1 interview so far. My friend told me to expect random questions like "whats your favorite tv show?" or "what do you do when your stressed" but I had speech based questions asking my experience, passion, etc. They also asked me to think about a time i observed a session and to explain - diagnosis, goals, what the clinician did, what i thought, ect.
My advice to you is to be confident in all of your answers, and to be yourself. Best of luck!