A {horrible|dreadful|terrible|frightening} thought {struck|hit|occurred to|came to} Harry, as {horrible|dreadful|terrible|frightening} thoughts always do when you're {very|extremely|incredibly} nervous. What if he wasn't {chosen|selected|picked} at all? What if he just sat there with the hat over his eyes for {ages|a long time|what seemed like forever}, until Professor McGonagall jerked it off his head and said there had obviously been a mistake and he'd better get back on the train?
A {horrible|dreadful|terrible|frightening} thought {struck|hit|occurred to|came to} Harry, as {horrible|dreadful|terrible|frightening} thoughts always do when you're {very|extremely|incredibly} nervous. {What if he wasn't {chosen|selected|picked} at all?|What if they {found|discovered} he wasn't {qualified|eligible} to be {chosen|selected|picked}?} What if he just sat there with the hat over his eyes for {ages|a long time|what seemed like forever}, until Professor McGonagall {jerked|pulled|yanked} it off his head and said there had obviously been a mistake and he'd better get back on the train?