Is it possible to express the future passive in an indirect question? I know that in the active, you use a periphrastic expression with sim, sīs, etc. and the future active participle (e.g., Scit ubi vir id āctūrus sit "He knows where the man will do it"). But what about "where it will be done"? Am I right in thinking that my options are basically (1) use the present subjunctive agātur, as the sequence of tenses would have me do, and just live with the ambiguity that results, or (2) cheat and use the indicative instead?
Neither Moreland & Fleischer nor Allen & Geenough seem to say much about passives in indirect questions.