This exercise takes 5-10 minutes.
Listen to the audio file once. ONLY ONCE. Do not listen a second time.
Then do the quiz.
Then, after you have compared your answers to the correct answers, read the materials about the assumptions and how the assumptions can happen.
You might like to look at the discussion threads from other learners, try the same exercise on colleagues, family members or friends in order to continue to discover more about how you and others listen and what assumptions get in the way of listening.