I was reading some examples of relative pronouns on the website http://www.gingersoftware.com/content/grammar-rules/relative-pronouns/
There is an example.
The store on the corner, where we usually buy all of our art supplies, burned to the ground.
How it can be correct ?. Shouldn't we use was before the burned, I think write sentence should be
The store on the corner, where we usually buy all of our art supplies,was burned to the ground.
I just want to be sure that second sentence is right, if not i must be missing something