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https://support.google.com/edu/classroom/thread/330248478?hl=en&sjid=2738058199496400243-NC
https://support.google.com/edu/classroom/thread/330247628?hl=en&sjid=2738058199496400243-NC
https://support.google.com/edu/classroom/thread/330247267?hl=en&sjid=2738058199496400243-NC
https://support.google.com/edu/classroom/thread/330245516?hl=en&sjid=2738058199496400243-NC
https://www.goodreads.com/quotes/12638351-24hrs-does-expedia-actually-refund-money-faqs--refund-yes-expedia-offers-full