Answer:
What goes through a door but never goes in and never comes out?
In a year, there are 12 months. Seven months have 31 days. How many months have 28 days?
What has no hands but might knock on your door, and if it does you better open up?
I am the enemy of all that is good and right. Five letters--that is the length of my name. Remove the first and evil I remain
Mary's child slept in one of these
If it’s information you seek, come and see me. If it’s pairs of letters you need, I have consecutively three. What am I?