Classics, modern fiction, non-fiction and more. Written for secondary and adult students the Oxford Bookworms Library has seven reading levels from A1-C1 of the CEFR. When Ping sees Hanno in the zoo, he is excited, but also unhappy. Hanno is a magnificent African gorilla, big and black and much stronger than a man. But how can this wonderful wild animal live in a cage, behind bars and locked doors? Then Hanno escapes from the zoo. And a few days later his footprints are seen near Green Knowe, the old house deep in the English countryside where Ping is spending his holiday... CEFR A2/B1 Word count 6,300