We live and learn. Good one.

Pretty straight forward
I love Roald Dahl
I know where Austin,brownsville,houston,dallas are
And I knew the world cup stadiums group
I didn't know the TV shows group but when you have got the other three groups you have got the last group.
Try some red herrings next time.

my favourite roald dahl book is the twits although in retrospect i realise that it is really prejudiced against people with beards.

I think the groups are easy, but the answers I gave were marked incorrect, when I checked them they were same as the required links.

There are some of us who think Dahl was ahead of his time .People with beards are taking over the world. They can't all just have mislaid their shavers.