How do you use the word file in a sentence?

She will file the letter in the file cabinet.

She used the file to file her nails.

He will file the case with the civil court.

You didn't say whether you want to use it as a noun or a verb, so here are a couple of choices.

File your nails before they break off.

The file needs sharpening.

I had to file my fingernails.

I put the manila file on my desk.

The file had a file extension of .jpg meaning it was an image file.

Pass me the Anderson file please.

I need to file these away.

She likes to file her nails.