When you need someone right now, call out Help! It is one word, and people near you stop and look.
Help!
Help! — Help! I am here.
Try it: _____ My leg hurts. (Help! / Thank you! / Good morning!) Answer: Help! — The bike is down on the sidewalk and one arm is up toward the person across the street, so the word here is Help!Thank you! comes after someone helps you, and Good morning! is a greeting.
Call 911
In the United States you call 911 on the phone for the police, for a fire, or for a doctor. You tell people Call 911.
Call 911 — Call 911 now.
Try it: There is a fire in the kitchen. _____ (Call 911. / Take this medicine. / Open the door.) Answer: Call 911. — A fire needs the fire department, and in the United States the number for them is 911, so the answer is Call 911.Take this medicine is for a sick person at home, and Open the door does not bring anyone.
emergency
A fire, or a person who needs a doctor right now: that is an emergency. In an emergency you do not wait.
emergency — an emergency in the street
Try it: Diego: Amina, come and look outside. Amina: Oh. This is an _____. Complete what Amina says. (emergency / appointment / address) Answer: emergency — An ambulance is at the curb with its lights on and the people near it are standing back, so this is an emergency. An appointment is a day and a time you plan, and an address is where a building is.