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.

A man started to town with a fox, a goose, and a sack of corn. He came to a stream which he had to cross in a tiny boat. He could only take one across at a time. He could not leave the fox alone with the goose or the goose alone with the corn. How did he get them all safely over the stream?

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?

If a wheel has 54 spokes, how many spaces are there between the spokes?

During which month do people sleep the least?

Do You See It?

John’s parents have three sons: Snap, Crackle, and what’s the name of the third son?

If I remove one from eleven it becomes Ten and if I remove one from nine also becomes Ten. How?

Can you name any English verb that becomes its past tense by simply rearranging the alphabets ?

I possess a head

I flaunt a tail

But I don't have mouth or legs

Can you find out who I am?