Excellent work! Your PDF is attached for you to review when you have a chance to.
For homework, try these exercises with don’t have to and mustn’t:
For some listening homework and a quiz on our key grammar topic:
For a writing homework, choose another situation. Similar to the examples on the final 3 slides of the PDF, write a short text describing how you should behave in that situation. Describe what you mustn’t/don’t have to do.
Have a good week and let me know if you have any questions or requests,