When do I use a semi colon

Which kind of narrator knows the thoughts and see all of the charters in the story

Underline the ic or ic's and place the proper punctuation if needed. the board of trustees admits that it made a mistake because the employees were toolazy nothing happen to the board

While looking at ads on a professional job site, justin saw this job posting: "the employee should have a degree in human behavior and at least 5 years experience in behavioral modifications. we are also looking for an employee who is good at crisis divergence. typically employees will spend a lot of time supporting others."