Can you spot what's wrong with the following sentence?

PETER WAS ANGRY AT
HIMSELF BECAUSE HE
ACCIDENTALLY LEFT THE
THE KEYS TO HIS CAR
AT HIS FRIEND'S HOUSE.

I have a hole in my back and legs I lack.
I live where I can’t breathe and I eat without teeth.
What am I?

They do not possess flesh or feathers or scales or bone
But still, they are blessed with fingers and thumbs of their own.

I have a head like a cat and feet like a cat, but I am not a cat. What am I?

I am weightless, but you can see me. Put me in a bucket, and I'll make it lighter. What am I?

I live in a bowl. I can swim. I have a tail. I also have fins and big eyes. What am I?

He digs out tiny caves and stores gold and silver in them. He also built bridges of silver and made crowns of gold. They are the smallest you could imagine. Sooner or later everybody needs his help, yet many people are afraid to let him help them. Who is he?

Why 1729 is a magic number? Answer Logically.

Can you name three consecutive days without using the words Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, or Sunday?

I’m tall when I’m young, and I’m short when I’m old. What am I?