I don't remember the audio on this particular exercise. There are times when I don't get it even if I play the slow version several times. If my answer is marked as incorrect, I listen to the audio again. Most of the time, now that I know the answer, I am able to discern the audio most of the time. Sometimes it still doesn't sound right.
OMG, yes! "ou" sounded like "vous." For the longest time, in both faster and slower modes, I kept pondering what in the world this sentence was. It finally occurred to me that she was in fact saying "ou." Sometimes I think the voice is a waste of time, especially the female voice. It provides almost nothing useful. I am using my other skills to determine what is being said, but am not improving my listening perception very much at all, which was the primary reason for taking a course. While Memrise provides better sound quality, it is so tedious, has no creativity at early levels, and is not improving any other skills of mine. I guess one cannot have everything when one is not paying! ;-) Be careful what I pay for, huh? I shouldn't complain, since it's free. And I am indeed learning many things from Duolingo, and am grateful for that.
Being partially deaf, the sound is a huge problem, esp the woman's voice. I consistently get the sound-only ones wrong, and often when I have the answer and play it back, it still makes no sense. My partner, a fluent French speaker, thinks I should use a course with better sound, but I like Duolingo and find it fun to use. The sound is my only gripe, albeit a frustrating one.
Yes. When you ask a question there are 3 ways to do so: inversion, raising of the voice or using a question word. Veux-tu is the inverted form of tu veux.
When one learns a language, one learns tense as well as "general idea."