A: Could you help me? B: What happened? A: I'm locked out of my apartment. B: What did you do to lock yourself out? A: I have no idea. B: You don't have your key? A: It's inside of my apartment. B: I have a key to your apartment. A: Could I borrow it for just a second? B: All right. Bring it back when you're done. A: Great, thanks a lot. B: I hope you'll be more careful next time.