{October|The month of October|As October|When October} {arrived|came|had arrived|set in|began}, {spreading|casting|bringing|sending|carrying} a {damp|moist|wet|chilly|frigid} {chill|coldness|cold} {over|across|throughout|all over} the grounds and {into|throughout|inside|deep into} the castle{| walls|'s corridors}. {Madam Pomfrey, the nurse,|The nurse, Madam Pomfrey,|Madam Pomfrey, who served as the nurse,|The school's nurse, Madam Pomfrey,|Madam Pomfrey, the castle's medical caretaker,} {was kept busy|was kept occupied|remained busy|found herself busy|became occupied|had her hands full} {by|with|due to|because of} {a sudden|an abrupt|an unexpected|a rapid|a swift} {spate|outbreak|surge|wave|increase|rise} of colds {among|amongst|within|affecting} {the staff and students|the students and staff|both students and staff|students and staff alike|the castle's inhabitants|those residing in the castle}.
{October|The month of October|As October|When October} {arrived|came|had arrived|set in|began|rolled in}, {spreading|casting|bringing|sending|carrying|it spread} a {damp|moist|wet|chilly|frigid|bone-chilling} {chill|coldness|cold|coolness} {over|across|throughout|all over|around} the grounds and {into|throughout|inside|deep into|within} the castle{| walls|'s corridors|'s interior}. {Madam Pomfrey, the nurse,|The nurse, Madam Pomfrey,|Madam Pomfrey, who served as the nurse,|The school's nurse, Madam Pomfrey,|Madam Pomfrey, the castle's medical caretaker,|The castle's medical witch, Madam Pomfrey,} {was kept busy|was kept occupied|remained busy|found herself busy|became occupied|had her hands full|was working tirelessly} {by|with|due to|because of|as a result of} {a sudden|an abrupt|an unexpected|a rapid|a swift|a dramatic} {spate|outbreak|surge|wave|increase|rise|influx} of colds {among|amongst|within|affecting|plaguing|troubling} {the staff and students|the students and staff|both students and staff|students and staff alike|the castle's inhabitants|those residing in the castle|everyone in the castle}.