1. Accidents can occur at any time, so it's important to always stay alert.
2. The meeting is scheduled to occur at 3:00 PM in the conference room.
3. It is common for natural disasters to occur in certain regions of the world.
4. I can't believe that theft occurred in such a safe neighborhood.
5. It is rare for such a coincidence to occur.
6. The thought never occurred to me that he might be lying.
7. An error occurred while processing your payment, please try again later.
8. The teacher reminded the students that the final exam will occur next week.
9. A change in weather patterns is expected to occur later this week.
10. A breakthrough in medical research is likely to occur within the next few years.