"That we are"
I offered "Ein bod ni" and it was marked wrong because apparently it should have been "Ein bod ni'n". Sorry, but grammatically the "yn" particle belongs with what follows it rather than what precedes it, even if it is written tacked onto the "ni" in the form "ni'n". In any case, what follows might not call for "yn" e.g. "ein bod ni ar y ffôn".