Is he walking ALONG the road?
Yes, he is.
Is he walking DOWN the hill?
No, he isn't.
What is he doing?
He's smiling.
What are you doing?
I'm swimming.
Are they walking UP the hill?
Yes, they are.
What is she doing?
She's jumping.
Is he walking ACROSS the bridge?
Yes, he is.
What is it?
It's a road.
What is it?
It's a bridge.
What is it?
It's sand.
What are they doing?
They are skating.
What is it?
It's a path.