Answer:
They keep secrets locked away. And you pass through them each day. For each one there is a key, They respond to sesame.
A tower at the root of all confusion.
In a year, there are 12 months. Seven months have 31 days. How many months have 28 days?
The more I appear The less you see. So riddle me this: What could I be?
What goes up when rain comes down?
Break me and I am better immediately set and harder to be broken again.