Answer:
When my father created a summer camp, I thought it would be a great idea to work with him, as I always liked working with children and promoting fun activities for them. However, it did not occur to me that my father would create a camp just for men ... adult men. I imagined that adult men would prefer to do other types of activities on vacation than to spend a season in a camp. When I arrived at the camp I was surprised by the number of people we would work with. It looks like my dad's business is a success.
Step-by-step explanation:
The paragraph above tells a history of involvement in five sentences and three irregular plurals, as the question asked.
Each sentence ends with a period and the irregular plurals are the words in bold, whose plurals do not follow the rules we have learned to put nouns in the plural.