I mean during the class 🙂

I’m not sure what you mean by, “talking with my classmates by my teachers.” But if this is something that’s not allowed, or something you shouldn’t be doing, then “caught up in” is right.

Great example. You can say, “he got caught up in the situation”

Thank you!

This is correct, but “heavy traffic jam” is redundant. You can either say “traffic jam” or “heavy traffic” but not both: “We got caught up in heavy traffic after eating out” or “We got caught up in a traffic jam after eating out.”

perfect

Thank you, I rewrote: I got caught up in the excitement of the game and forgot to eat dinner.