1. What is clean when it is black and dirty when it is white?And you always see me in the classroom. 2. What has a round face and two thin hands, one hand short, one hand long? And Ican tell you the time. 3. What is big and bright during the day and we can’t see it at night? 4. I am small. I can fly. I like singing in the sky. What am I? 5. Which letter is a drink?