Q1. Which colors do many fast-food restaurants have on their signs?
A1. It's red and yellow, green.
Q2. Why do many fast-food restaurants have reed on their signs? (There are 2 reasons. )
A2. 1. Because we can see red from far away.
2. Because red is a color which makes you hungry.
Q3. What fast-food restaurant do you think that it has red on their sign? ( This answer is not include in this story. )A3. For example. It's McDonald.