What is it?
Plant trees / Planting trees
What is it?
Step on trees / Stepping on trees.
What is it?
Waste water / Wasting water
What is it?
Save water / Saving water
What is it?
Drop litter / Dropping litter
What is it?
Pick up litter / Picking up litter
What's he doing?
He is planting trees.
What's he doing?
He is dropping litter.
What's he doing?
He is wasting water.
What's he doing?
He is stepping on trees.
What's she doing?
She is picking up litter.
What's she doing?
She is saving water.
What's she doing?
She isn't planting trees.
What's he doing?
He isn't planting trees.
What's he doing?
He isn't picking up litter.
What's he doing?
He isn't wasting water.
