['Once when I was in high school, I unexpectedly received an award. It was for the work I did for the school year book.', 'What exactly did you do for the school year book?', 'I was an editor, so I designed and wrote up the pages that were in my section.']
That is wonderful. I use to love English classes in college.
One time in high school, I received an award unexpectedly. It was for the work I did on the school year book.