Row 1
Row 2
Row 3
Row 4
Row 5
100
What has to be broken before you can use it?
An egg
100
The more of this there is, the less you see. What is it?
The Darkness
100
David’s parents have three sons: Snap, Crackle, and what’s the name of the third son?
David xd
100
What has many teeth, but can’t bite?
A comb
100
What would you find in the middle of Toronto?
The letter "o"
200
What is full of holes but still holds water?
A sponge 
200
What has many keys but can’t open a single lock?
A piano
200
What has legs, but doesn’t walk?
A table ┬──┬ ¯\_(ツ)
200
What has words, but never speaks?
A book 📚
200
What is so fragile that saying its name breaks it?
Silence
300
What is always in front of you but can’t be seen?
The future :o
300
What invention lets you look right through a wall?
A window
300
What goes up and down but doesn’t move?
A staircase 
300
Where does one wall meet the other wall?
A corner :)
300
The more you take, the more you leave behind. What are they?
Footsteps
400
What can you break, even if you never pick it up or touch it?
A promise
400
What can’t talk but will reply when spoken to?
An echo
400
What can you catch, but not throw?
A cold
400
What building has the most stories?
The library
400
People make me, save me, change me, raise me. What am I?
You're money!
500
What gets wet while drying?
A towel
500
A man dies of old age on his 25 birthday. How is this possible?
He was born on February 29.
500
What is black when it’s clean and white when it’s dirty?
A chalkboard :):max_bytes(150000):strip_icc()/how-to-clean-a-chalkboard-5194934-01-d73925af4b374d6dbaa1f63ba3368da7.jpg)
500
What begins with an "e" and only contains one letter?
An envelope 
500
What goes through cities and fields, but never moves?
Roads :o)