A {horrible|dreadful|terrible|frightening|awful|disturbing} thought {struck|hit|occurred to|came to|flashed through|popped into} Harry, as {horrible|dreadful|terrible|frightening|awful|disturbing} thoughts always do when you're {very|extremely|incredibly|particularly|truly|really} nervous. {What if he wasn't {chosen|selected|picked} at all?|What if they {found|discovered|realized} he wasn't {qualified|eligible|meant} 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|an eternity}, until Professor McGonagall {jerked|pulled|yanked|took|lifted} it off his head and {said|announced|declared|told him|informed him} there had {obviously|clearly|definitely|undoubtedly|certainly} been a mistake and he'd {better|have to|need to} get back on the train?
{A {horrible|dreadful|terrible|frightening|awful|disturbing} thought {struck|hit|occurred to|came to|flashed through|popped into} Harry|Harry {was struck|was hit|had} {by|with} a {horrible|dreadful|terrible|frightening|awful|disturbing} thought}, as {horrible|dreadful|terrible|frightening|awful|disturbing} thoughts {always|inevitably|typically|usually} do when you're {very|extremely|incredibly|particularly|truly|really} nervous. {What if he wasn't {chosen|selected|picked} at all?|What if they {found|discovered|realized} he wasn't {qualified|eligible|meant} to be {chosen|selected|picked}?|What if he didn't {belong|fit in} at all?} {What if he just sat there with the hat over his eyes for {ages|a long time|what seemed like forever|an eternity}|What if the hat {covered|sat on} his eyes for {ages|a long time|what seemed like forever|an eternity} as he just sat there}, until Professor McGonagall {jerked|pulled|yanked|took|lifted} it off his head and {said|announced|declared|told him|informed him} there had {obviously|clearly|definitely|undoubtedly|certainly} been a mistake and he'd {better|have to|need to} get back on the train?