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more
move
plant
factory
bin
Enjoy a song
Two little black birds
Two little black birds sitting on the hill,
One named Jack and one named Jill.
Fly away ,Jack. Flay away Jill.
Come back ,Jack and Come back ,Jill.
Why do they fly away?
Think and say
Which city do the birds like?
城市
messy and dirty
clean and tidy
又脏又乱
干净又整洁
Is our city clean?
干净的
the air
the water
卫生城市
The streets are clean
What about their city？
watch and answer
Is their city clean?
Read and finish：(阅读P58文本，同桌合作，回答完整。)
1.____________makes the air(空气)dirty.