Look at the following examples of questions with supposed to:
Am I supposed to get my car inspected every year? Yes, you are. Are you supposed to work late tonight? No, I'm not. Is it supposed to rain tomorrow? No, it's not. Is Lori supposed to be here now? Yes, she is. Are we supposed to read unit 4? Yes, you are.
What are we supposed to do after the break? When is the plane supposed to arrive?