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 four wings but can't fly.
I express no emotions.
I am found on the exact spot every time you look.
I keep toiling away with a little sound.

Do you know what am I?

They came out at night, without being called.
They lost at day, without being stolen.
Who are they?

Why 1729 is a magic number? Answer Logically.

You knock a Table over in the library, and suddenly 20 eyes are looking at you.

How can you write nineteen in a manner that if we take out one, it becomes twenty?

A wooden log balances equally on the scales when weighed with three-quarters of a pound and three-quarters of a wooden log.

Can you calculate the weight of the entire wooden log?

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

The first two letters signify a male, the first three letters signify a female, the first four letters signify a great, while the entire world signifies a great woman. What is the word?

How many letters are in the alphabet?