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sweep the floor
put rubbish in the bin
take a metro
I say: walk to school
You say: walk, walk, walk to school.
smoke from factories
clean the windows
Play a game
make our city dirty
keep the air clean
make the fish dead
make the streets messy
The ____ is dirty.
What makes the air dirty?
Smoke from factories makes the air dirty.
Smoke from cars makes the air dirty.
Smoke makes the air dirty.
air
Let’s review
makes
makes
makes
The streets are _____ and ______.
Rubbish makes the streets messy and dirty.
What makes the streets messy and dirty?
Let’s review
messy
dirty
The river ________.
The ____________.