Allow users to postpone speaking and listening questions so that they can do lessons more easily in a public setting (e.g., a public library)?
yes, but you should also be able to do questions that are mostly just speaking and listening
They should make it so that you can skip these listening/speaking questions and do another written question in its place.
Deselecting voice autoplay on the settings only disables autoplay....you still get questions. It is really annoying especially as many public places also block streaming audio so I never actually pass any exercises. I think the mix of questions are great but either they find a technically better solution to their sound or they allow people to block listening questions in the same way which, I believe, you can block speaking questions without losing a life....