The Provincetown Commons, at 46 Bradford St., has two shows opening Tuesday, May 18th and running through May 30th. “Not Always Just Sometimes” is an exhibit of paintings and prints by Maria Negulescu. “Surf & Turf” is an exhibit of seafood-inspired oil paintings by Caroline Carney. The Commons is open Monday through Friday, 8:30 a.m. to 5 p.m., and weekends, 10 a.m. to 2 p.m.