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The ＿＿＿ is clean.
The ＿＿＿ is clean.
The ＿＿＿ is clean.
river
air
street
空气（不可数名词
Why do the birds not like the city?
The _______ is dirty.
The ______ is dirty.
The _______ is messy.
脏乱的
Is the city clean ?
No,it isn't.
It's dirty.
肮脏的
thirty --- dirty
river
rubbish
垃圾
air
Thinking time
What will the dirty city take to us ?
肮脏的城市会给我们带来什么？
Keep our city clean
保持
Disease 疾病
Death 死亡
Watch the Cartoon and answer :
Q2：What makes our city dirty?