Last year in Economics they posted the answers online weekly, but only after all classes for the subject had finished on both campuses.
Barely anyone in my tute did their questions beforehand, but I'd strongly advise attempting them & not just be hoping to be spoonfed the answers. There really isn't enough time to get through them all in the tute, and then you hit a laziness cycle of having half done homework every week (plus how will you learn the content) - friends did this and they struggled in the final exam & ended up failing.