In this task, you will use your knowledge about language (and common sense) to determine what element the marked number refers to. The numbers are marked with two underlines around them, like: _ number _. Your answer should be chosen from the given text, and should not contain other words.

Lady Bracknell:  Come on , Gwendolyn , we have already missed _ five _ , if not six trains ! To miss any more might expose us to comments on the platform .
trains

Kay Chandler:  You know those drugstore kits that tell you when you 're pregnant ? They should have _ one _ that tells you when you 're sane .
kits

David Zimmerman:  How come I 've never heard of this guy ?
Derek Morgan: Have you ever heard of Efren Saldivar ?
David Zimmerman: No .
Derek Morgan: David Parker Ray ? How about John Edward Robinson ? See , at any given time , we have at least 25 open cases . Every year we 're able to close around _ 15 _ , yet new ones still seem to pop up . There are more serial killers out there than you may think .

cases