Do they want to travel to see the world from outside the Earth? - общий Do they or we want to travel to see the world from outside the Earth? - альтернативный Why do they want to travel? специальный They want to travel to see the world from outside the Earth, don't they? - разделительный Who wants to travel to see the world from outside the Earth? - к подлежащему
Do they or we want to travel to see the world from outside the Earth? - альтернативный
Why do they want to travel? специальный
They want to travel to see the world from outside the Earth, don't they? - разделительный
Who wants to travel to see the world from outside the Earth? - к подлежащему