there was and there were

there was

* there was a mirror in my bedroom
* there was a book in my school
* there was a much salt in my eggs
* there was a computer but damage
* there was any person here  

there were

* there were many eggs in the supermarket
* there were some conflicts
* there were many people here 
* there were student in the shcool the morning
* there were some boys in the park