Choose the sentence below in which ofis used correctly. 

       A. The three girls might of broken the records.   B. The boys surrendered, but they should of fought.   C. We should of left early.   D. The bird flew north of the beach.

Respuesta :

D. The bird flew north of the beach.

Moral verbs must always be followed by infinitives and not the preposition. So for the others to be correct, they need to use "have" instead of "of".