One way to rewrite the sentence is "Make sure you tell them the truth when you talk to them".
What is Mood?
This refers to the general atmosphere of a setting and how this affects the characters in a story in either a good or bad way.
Hence, we can note that the shift in mood in the original sentence is one that goes from appealing to firm and this is meant to convince the other person to tell the truth.
Read more about mood here:
https://brainly.com/question/523622
