People around always make me laugh.

People around always make me laugh. I can't study!!
People around always make me laugh. I can’t study!!

It’s really a great thing that you get so much joy from your fellow students, but I can see how this could become a problem. Can you explain the situation to your study friends, and ask them to help you out with a more serious environment… just while you’re studying? Afterwards, they can revert to being their hysterically funny selves.