Answer:
What has many keys, but can't even open a single door?
What must take a bow before it can speak?
How is Europe like a frying pan?
There is an ancient invention. Still used in some parts of the world today. That allows people to see through walls.
I can ' t be burned in fire , Nor drowned in water . You use me for your pleasure !
Written on with words of white, Has the color of the night, Is the teacher's best delight, And a student's daily fright