Answer:
What invention lets you look right through a wall?
I have keys but no locks. I have space but no room. You can enter but can't go outside. What am I?
You use a knife to slice my head but you weep beside me when I am dead
Who plays when he works and works when he plays?
If you lose me, you may cause people around you to lose me too. What am I?
I have feet on my head
What am I?
Animal
Difficult
Easy
Food
Funny
Kids
Logic