FRANCISCA: It is a man's voice. Gentle Isabella, Turn you the key, and know his business of him; You may, I may not; you are yet unsworn. When you have vow'd, you must not speak with men But in the presence of the prioress: Then, if you speak, you must not show your face, Or, if you show your face, you must not speak. He calls again; I pray you, answer him.