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birds
sheep
sheep
grass
egg
eggs
tree
trees
flower
flowers
sheep
grass
sheep
bird
birds
What’s this?
It's a square.
↓
What are these?
They are squares.
What’s that?
It's a square.
↓
What are those?
They are squares.
连线
What are these?
What are those?
What is this？
What is that?