UNIT 1 THE ENGLISH LETTERS (L1-3)
UNIT 1 THE ENGLISH LETTERS (L4-7)
UNIT 2 CLOTHES (L8-10)
UNIT 2 CLOTHES (L11-14)
UNIT 3 WEATHER (L15-17)
UNIT 3 WEATHER (L18-21)
UNIT 4 OPPOSITES (L22-24)