Voted Best Answer

Mar 11, 2018 - 08:15 PM
I'm a native french speaker and to me both would make sense. But "de" makes more sense in that phrase because if you say "un" you are kinda saying "one", like "you dont have one professor".
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Mar 11, 2018 - 08:15 PM
Mar 12, 2018 - 03:52 AM