Choose the correct preposition.

Highway 1 runs ... the coast.
Be careful! Don't fall ... of the steps.
Keep walking ... me!
Never run ... the road. Always walk.
Ilia always goes to work ... foot.
You can get stuck ... mud in the Everglades.
Cars go under the river ... the tunnel.
I prefer to travel around the city ... bus.
There is a comfortable sofa ... our living room.
Are you taking part ... the football tournament?