Ребят, помогите это предпоследнее задание.

Преобразуйте слова в скобках в однокоренные слова или слова нужной части речи и вставьте их в пропуски.1) Thanks to them and the whole organization these wonderful buildings ___________ for future generations. (preserve)2) In cities where there are more students than here attending the same university, there are sometimes ___________ morning and afternoon sessions. (separatist)3) With this in mind it’s no surprise that a 50 km skiing marathon was __________ . (exclusive)4) Zorbing involves being inside a transparent plastic ___________ ball. (inflate)5) I couldn’t really understand what’s so ___________ about bouncing a ball up and down a pitch. (thriller)

1) Thanks to them and the whole organization these wonderful buildings have been preserved for future generations. 2) In cities where there are more students than here attending the same university, there are sometimes separate morning and afternoon sessions. 3) With this in mind it’s no surprise that a 50 km skiing marathon was excluded. (Не уверена!!!) 4) Zorbing involves being inside a transparent plastic inflated ball. 5) I couldn’t really understand what’s so thrilling about bouncing a ball up and down a pitch.