Lesson XX Blocks and Bricks Plot Sentences A. Review Exercises A.1. – A.10. Open Green Book B. Review Exercises A.11. – A.20 Open Green Book C. Review Exercises A.21. – A.30. Open Green Book D. Review Exercises A.31. – A.42. Open Green Book Sentences String Out Stories 1. Conversation Open Green Book 2. Comprehension Open Green Book 3. Exercises 3.1. – 3.19. Open Green Book