รายละเอียด(อย่างย่อ) These are one of a series of delightfully humorous award-winning tales for beginner readers from an internationally acclaimed author-illustrator. Gerald is careful. Piggie is not. Piggie cannot help smiling. Gerald can. Gerald worries so that Piggie does not have to. Gerald and Piggie are best friends. In "My Friend is Sad", Gerald is sad. How can Piggie be happy if Gerald is sad? Told entirely in speech bubbles with a repetitive use of familiar phrases, this highly original book is perfect for children just learning to read. It is a vibrant new edition with bright colours that will appeal to young readers. It is a Theodor Seuss Geisel Award-winning series for the most distinguished books for beginner readers.