{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{| indeed}. {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|a mistake had {obviously|clearly|definitely|undoubtedly|certainly} been made} and {he'd {better|have to|need to} get back on the train|he should return to the train{| immediately}}?
{A {horrible|dreadful|terrible|frightening|awful|disturbing}{| and unexpected} thought {struck|hit|occurred to|came to|flashed through|popped into} Harry{| suddenly}|Harry {was struck|was hit|had} {by|with} a {horrible|dreadful|terrible|frightening|awful|disturbing}{| and unexpected} thought{| suddenly}}, as {such {horrible|dreadful|terrible|frightening|awful|disturbing} thoughts|{horrible|dreadful|terrible|frightening|awful|disturbing} thoughts {like these|such as these|of this nature}} {always|inevitably|typically|usually} do when you're {very|extremely|incredibly|particularly|truly|really} nervous{| indeed}{| and anxious}. {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 this was all {just|simply|merely} a {big|huge} mistake?} {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|What if he {remained|stayed} seated with the hat {covering|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{| with a {frown|sigh|look of disappointment}} and {said|announced|declared|told him|informed him} {there had {obviously|clearly|definitely|undoubtedly|certainly} been a mistake|a mistake had {obviously|clearly|definitely|undoubtedly|certainly} been made}{| of some kind} and {he'd {better|have to|need to} get back on the train|he should return to the train{| immediately}|it would be best if he {went|headed} back to the train{| right away}}?