A simple answer would be:
The dog would gnaw at the fence to escape.
The dog began to gnaw at the bone.I told you not to gnaw on your brother's fingers.Don't gnaw your teeth.
It is gnaw.
They can also gnaw the roots below ground level.
the g in gnaw is silent
sentences that have biting in them
The definition of the word gnaw is to nibble or bite at something in a persistent manner. It means to persistently chew on something.
Mice will gnaw on any hard material to work on their teeth.
The word "should" be used in the conditional sentences.
no
You can can use the word "enhance" to enhance your sentences. Enhancing your sentences makes them so much better.
The word is spelled gnaw.
The dog began to gnaw at his leash.I began to gnaw at the bone to get all the delicious meat off.It appeared that a rat has decided to gnaw through the cables.