EnglishUp6
9.1
9.1
0:000:00
Units 9.
Units 9.
Page 163.
Study the words
Plug
Unplug
Cut down trees
Recycle
Garbage
Rubbish
Litter
Trash
Waste energy
Water pollution
Pour waste into rivers
Air pollution
Hunt animals
Solar energy
Wind energy
Factory
Pick up garbage
Public transportation
Private car
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