RHG1B - L17 Communication Then and Now
What is it? What is this used for? When did we use it? Now or in the past?
It is a candle. People used it for light in the past.
What is it? What is this used for? When did we use it? Now or in the past?
This is a bulb. We use them for light. We use them now.
What is it? When did we use it? Now or in the past?
This is an old bicycle. They looked like this in the past.