A: Do you think the people are enjoying the class?
B: Yes, they are really having a good time together in this class.
A: Why do you think so?
B: The way I look at it, they are dancing together and all of them show their happiness and excitement. They are not wearing uniforms, but they are doing the same activity, maybe they are practicing for a performance or are doing exercise together. No matter what it is, I believe they are enjoying every moment in the class.