Which verb or verb phrase should be used in the sentence below? neither the teachers nor the principal who let the crows into the school gymnasium. knows have known know were knowing

Know, because know is present tense as is the rest of the sentence. 

The lines for all we know could idicate she shoved a whole bag of jelly beans up her rear end. because you're a moron and trying to cheat by having classmate from your online school fill in the next time just put the dialogue in the question too. thx for the points.

A: become a alien but sound like a human