What are they?
They're trees. / They are trees
What is it?
grass
What is it?
a butterfly
What is it?
the sun
What is it?
the sea
What is it?
It's the sky
What is it?
a river
What are they?
They're birds. / They are birds.
What are they?
They are rocks. / They're rocks.
What are they?
They're mountains / They are mountains.
What is it?
a tree
What is it?
a mountain
What is it?
a rock
What is it?
a bird
What are they?
They are butterflies. / They're butterflies