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chair
空气
/kli:n/
The river was .
The ＿＿＿ was clean.
clean
Try to say
Try to say
Now,our city is…
Now,what can you see in these pictures?
The ______ is dirty.
It's dirty.
肮脏的
thirty --- dirty
air
/?d?:ti/
Try to say
The street is ______.
The street is _______.
messy
The street is messy and dirty.
/?mesi /
乱七八糟的
dirty
Try to say
Keep our city clean
保持
Unit6
To be a volunteer,to keep our city clean.
了解城市污染的现状