A: Boy, it's chilly outside, isn't it?
B: It sure is.
A: In fact, it's chilly in the apartment, too.
B: Let's turn on the heat.
A: I'll check to make sure that all the windows are shut.
B: It should be warmer in a few minutes.
A: It's so nice to have a heated apartment.
B: How did they survive in the old days?
A: They had fireplaces.
B: Someone had to chop the wood.
A: And carry it into the house.
B: All we have to do is flip a switch.