Io suppongo che lei era felice allora.

[hab638]

[details=“English Translation”]I suppose that she was happy then.[/details] Shouldn’t “essere” be conjugated in the subjunctive here (fosse)? The phrase is introduce by “che,” and “supporre” isn’t the same as “sapere.” Would one be free to choose either tense?

[mike-lima]

Not really, no. “Supporre” introduces uncertainty/doubt about the statement so you should say “Suppongo che allora lei fosse felice.”