Answer:
I have a straight back and sharp teeth to cut objects.
I am always in front of you, but yet I am never here. What am I?
My flavors ranges from strawberry to toe.
I can be heard in a court or carried with you.
What is always in front of you but can't be seen?
Though not a plant, has leaves. Though not a beast, has spine. Though many wouldn't need this thing, It's more valuable than wine.