grammar - "Wasn't" vs "weren't" - English Language & Usage ...
Both forms are fine. I wish it was… I wish it were… The traditional formal line on this is unclear. I’d always understood that the subjunctive, were, is the correct mood to use with wish; and Wikipedia, various other online sources, and Stan Rogers agree.However, Robusto disagrees articulately… so until someone finds what a serious authoritative modern grammar says on this, it seems open.
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