Given the task definition and input, reply with output. You are given an English sentence with a blank, and you need to predict the missing word. After completing, the whole sentence should be gramatically correct and non-ambiguous.

directly afterwards the door was opened wide enough to admit her and when she had ____ through it was again shut without losing sight of her for an instant the concierge took a whistle from his pocket as soon as they entered the court and blew it

passed