THERE IS A SCHOOL SHOOTING THE TEACHER GATHERD UP THE KIDS IN THE CORNER RID RIDDLES WITH ANSWERS TO SOLVE - PUZZLES & BRAIN TEASERS

The liars are as follows:

1.Julia
2.Jack

The rest are telling the truth

1.Jane
2.Joey
3.John

Jack says out of the 3 names listed one is lying. That was a lie. Therefore those are the three that can not tell a lie... Did you answer this riddle correctly?
YES  NO  

A snail or a measuring device (like a yard stick or tape measure). A snails foot is a muscle that allows it to move, and measuring devices have feet on them to measure distance. Did you answer this riddle correctly?
YES  NO  

The answer is Carrot Did you answer this riddle correctly?
YES  NO  

The letter M Did you answer this riddle correctly?
YES  NO  

Cut Did you answer this riddle correctly?
YES  NO  

By school buzz! Did you answer this riddle correctly?
YES  NO  

An eraser. Did you answer this riddle correctly?
YES  NO  

Earth Did you answer this riddle correctly?
YES  NO  

With a blue shark spear gun. Did you answer this riddle correctly?
YES  NO  

They know how to use their heads. Did you answer this riddle correctly?
YES  NO  

Times Square Did you answer this riddle correctly?
YES  NO  

A corner Did you answer this riddle correctly?
YES  NO  

He already has one cat. 6 + 1 = 7. Did you answer this riddle correctly?
YES  NO  

Bean bag Did you answer this riddle correctly?
YES  NO  

So I can reach the high notes Did you answer this riddle correctly?
YES  NO