Как ответить на вопрос where were you at twelve oclock on sunday

I was in the park at twelve o'clock on Sunday. I was at the library at twelve o'clock on Sunday. I was at the stadium at twelve o'clock on Sunday. I was at my friend's house at twelve o'clock on Sunday. I was at the cinema at twelve o'clock on Sunday. I was at the shop at twelve o'clock on Sunday. I was at the circus at twelve o'clock on Sunday. I was at the computer center at twelve o'clock on Sunday.