There is a reason you can’t find a teacher worksheet with answers included.
Most of the tasks are consciously set to be very open and invite interpretations from your students. It is never a good idea to have a set of preformed answers to these as you will be too tempted to impose them on your students even if you don’t consciously want to. I have had the best discussions and lessons with questions where I told my students I don’t know the answers and I am really interested what their ideas are. This way, they put much more effort into finding the answers and I put much more effort into listening to them.
You can find answers to the tasks with only one possible answer at the bottom of the specific page.