That is an apple., This is an apple., This is a bus., That is a bus., This are a book., This is a book., This is balls., That is a ball., This is a cupboard., This is a computer, This is a book blue., This is a blue book., That is a cow., This is a cow ., That is a bird., This is a bird., This is a yellow duck., That is a yellow duck., This is a board., This is a pencil case .

This / That

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