You would say "This store used to sell shoes."
Student or Learner
In shopping complex, i found the commodity selling was changes, there is no more displaying shoes instead by selling clothes.
Can i say：＂Here used to sell shoes before.＂
Jason, you absolutely MUST capitalize the pronoun "I."
You have been told this a few times now. If you keep doing it, people will stop answering your posts.
I'm not a teacher, but I write for a living. Please don't ask me about 2nd conditionals, but I'm a safe bet for what reads well in (American) English.