My professor said there was a way to get all the test/quizzes answers and questions?
Unfortunately, your instructor was wrong!
At least he was wrong if he said that you could "download" the test. What you can do, if your instructor has set it up correctly, is view the corrected test and all the correct answers for items you may have missed.
Learn more at How do I view quiz results as a student?
I hope this is helpful,
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