Lesson 6 Lesson 6 Re vie w 4 4 Review 1 4.21 Listen and circle. 1 2 a a b b 3 4 a b a b 2 Draw. y 3 4.22 Listen. Then say. . Activity Book, Unit 4 Sounds and Spelling Book Lesson 6 Unit 4, Lesson 6 forty-five 45