Dropping "ne" in ne...pas/que/personne/etc should be accepted

Nobody actually uses `ne` in ne...pas, ne...que, ne...personne, etc. in regular speech. It is strange to have both ne...pas and ...pas as possible answers yet only mark ne...pas as correct, especially given that these example sentences are all in a colloquial register. I think it would make more sense to simply remove ...pas as an option if you wish to reinforce the ne...pas pattern for writing, but really they should both be accepted.