6 типов вопросительных предложений к предложению: Canada is the second largest country in the world.

1 is Canada the second largest country in the world? 2 Canada is the second largest country in the world, isn't it? 3 Canada isn't the second largest country in the world, is it? 4 Is Canada or Russia the second largest country in the world? 5 Why is Canada the second largest country in the world? 6 What country is the second largest in the world?