好的，以下是一些：
What is it that everyone wants to have and get hold of?
What is the smallest room in the world?
What is the strongest thing in the world?
What is the hardest thing in the world?
What is the most expensive thing in the world?
What is the longest thing in the world?
What is the blackest thing in the world?
What is the whitest thing in the world?
What is the loudest thing in the world?
What is the smallest letter in the world?。