Riddles
What has many keys, but can't open a lock?
What is a piano
I am an odd number. Take away a letter and I become even, What number am I?
what is Seven
What has many holes but still holds water?
What is a sponge
What occurs once in a minute, twice in a moment, but never in a thousand years?
What is the letter M
This thing devours all things: birds, beasts, trees, flowers. It gnaws at iron and steel. What is it?
What is time?