Yes, the egg cracker has been invented.
Not yet unless they have been invented by millionaires and not spread out to the rest of the world
it hasn't been invented yet.
What hasn't been invented is a flying car!
No, a Pinto Florida Cracker has not been a bred yet but look to the future when someone could breed a Pinto horse and a Florida Cracker horse and make a Pinto Florida Cracker horse.
YES it has been invented
Bionic eyes have not been invented yet.
Sorry, read the Hobbit. Eggses!
Umm it really as not been invented yet so... I can not really say yet
There are so many things that people of the past have dreamed of but never invented any failed invention is a thought of the past that hasn't been invented yet.
you dont it has not been added yet
something that hasn't been invented yet is a teleportation device Manned Interstellar Travel
no egg can lay another egg because they have not been born yet when the egg has hatched and it has grew up then they can lay an egg of there own.