Wingin' it

Just yesterday the mayor of Ponyville said that all ponies would be taking a test. The next morning, when Rainbow Dash awoke, she immediately went for a daily spin of exercise around the mountains, then a bit of cloud busting, and then she flew down to the streets of Ponyville. The empty streets of Ponyville. Obviously, the fillies and colts would all be at school, but what of the other, adult ponies and stallions? The first place to go would be Twilight's library. Being a braniac, surely she would be able to help solve a mystery. Rainbow Dash flew straight towards the library. She looked through the window, and indeed Twilight was inside, with the company of at least twenty books floating around her, flicking the pages so she could speed-read. Was she looking for something? Or was it re-shelving day? The only way would be to find out. Rainbow Dash pounded on the door to see a purple unicorn come to the door. "Oh, hi Rainbow. Everything all right?" she asked. Rainbow grabbed Twilight's face and looked her in the eyes. "Everything ALL RIGHT?" she cried "There's no-one in the streets, whatsoever! I need you to help me solve this mystery!" Twilight giggled at this. "What's so funny?" asked a confused pegasus. "That's no mystery!" Twilight laughed "Everypony is probably studying for the test. Frankly, I'm quite surprised you aren't revising too". Rainbow Dash gave a strange look to this. "Me? Study? Seriously, Twi, I'm an ADULT pony. I don't think I need to study for just some dumb old test. It'll be as easy as Applejack bucking apples" and with that, she zoomed off.