Hello, in one of the lessons I read Tal Vez accepts both indicative and subjunctive, but when I included the indicative in my answer to the following question, it was marked wrong.
Tal vez ________ una gala benéfica para los niños pobres.
There might have been a charity gala for poor children.(HINT: Conjugate "haber" in El Imperfecto de Subjuntivo)hubohabríahubierahubieseCould please explain?