If you say my name, I will no longer exist. What am I?

I am the fastest animal but cannot climb the tree. What am I?

I am looking for a word that change both gender and number when i add the letter 'S'.

What Word am I Looking For ?

There are five vowels (a, e, i, o, u) in the English language.
Can you tell us a word that contains all these vowels?

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?

What has one letter and starts with an E?

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.

What word begins and ends with an E, but has only one letter?

Before Mount Everest was discovered, what was the highest mountain in the world?

One day, John and his friends were playing around. Jacob hit something with a Pin and it popped. John's dad came into the room that very moment, but he wasn't mad. In fact, he was smiling. What did Jacob hit?