Envelope #7 Contains Levels 17, 18, 19, 20 and 21. Level 17: The Enormous Rock, Choosing a Kitten. Level 18: Hope's Necklace, Shona Plays the Fiddle. Level 19: Summer Adventure, Climbing the Apple Tree. Level 20: A Gift for Kokum, The Basketball Game, Gonzo is Missing. Level 21: Dorian's Cast