Answer:
What letter comes next: O T T F F S S ?
Once they sailed the sea, now they surf the web
What relies on columns but isn't a house, and asks for help but can't speak itself?
What does a WW1 Trench, A Submarine and a Popular Phone App all have in common?
I am mother and father, but never birth or nurse. I'm rarely still, but I never wander.
When is it bad luck to see a black cat?
Difficult
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?