Page 44: Exercise 1, All; Exercise 2, All
Page 45: Exercise 1, Numbers 1-5; Exercise 2, All
Page 47: Exercise 1, All; Exercise 2, 1-5
Page 48: Exercise 1, All; Exercise 2, 1-5
Page 49: All
Page 50: Exercise 1, 1-5; Exercise 2, 1-5, Exercise 3, All
Page 33: Exercise 1, All ; Exercise 2, All
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