Blippo and BeepBy: Sarah Weeks Illustrator: Joey Ellis Knock knock. Who's there? Blippo and Beep! Blippo and Beep are a pair of silly robot friends. While Blippo is good natured and eager, Beep is a bit more serious and practical. But when they start to share knock knock jokes with each other, Blippo doesn't really understand how they work, and Beep begins to run out of patience! Exciting, easy to read books are the stepping stone a young reader needs to bridge the