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