Student or Learner
1) I put my phone on silence mode when i sleep because i do not want to get/receive any sort of interruption.
2) If you don't study, you will not be able to catch up with the class/lesson thought in class.
3) Did you break 20 plates in one incidents/occasion or in several occasion/incidents.
4) I have started my revision for all the final exams or i have started revising for final exams.