electricity turn off what if... must safely wire |
A: Hi, Sue, would you like to talk about electricity?
B: Yes, I'd love to.
A: Well, how can we use lights safely?
B: We must turn off the lights off when we leave the room?
A: What must we do if the bulb is broken?
B: We must turn off the electricity when we change the bulb.
A: What if...
B: I think...
