Have vs. Has in third person of unknown gender? [duplicate]
Solution 1:
According to the OED "they" can be a singular or plural third person pronoun. When used with a verb it usually takes the third person plural form. "They are" as opposed to "they is", "they run" as opposed to "they runs". If there is such a rule about pronouns, then "they" is an exception no matter what they says say.