Read the dialogue aloud by yourself and fill in the blanks. Tom's mother collapsed while talking to him on the phone. Tom calls for help.

Emergency Call Operator: 911, what's the ... ?
Tom: I was speaking to my mum on the phone when I heard a thud and she stopped speaking. She might be unconscious. Can you ... ?
Emergency Call Operator: Yes. What number are you calling from?
Tom: My number is .7871567
Emergency Call Operator: What's her ... ?
Tom: The address is 18 Rose Street.
Emergency Call Operator: We're ... an ambulance now. Please stay ... .