UNIT 1 COME MEET OUR FRIENDS (L1-3)
UNIT 1 COME MEET OUR FRIENDS (L4-7)
UNIT 2 ANIMALS AND SCIENCE (L8-10)
UNIT 2 ANIMALS AND SCIENCE (L11-14)
UNIT 3 INTERESTING HOLIDAYS (L15-17)
UNIT 3 INTERESTING HOLIDAYS (L18-21)
UNIT 4 WORLD FAMOUS FABLES (L22-24)
UNIT 4 WORLD FAMOUS FABLES (L25-28)