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Lesson 1 1
Lesson 2 5
Lesson 3 10
Lesson 4 13
Lesson 5 16
Lesson 6 19
Lesson 7 23
Lesson 8 27
Lesson 9 31
Lesson 10 35
Lesson 11 41
Lesson 12 45
Lesson 13 50
Lesson 14 54
General Review(Book Ⅰ) 58
General Review(Book Ⅱ) 64