Ответы и объяснения

Лучший Ответ!
1) They first became famous... всё предложение до конца.
2) предложение от then in 1991 - до this seemed.
3) many people believe that although some of the crop circles are made by humans, we cannot explain the appearance of the more complicatted patterns.
4) всё предложение от Wiltshire also has ... до конца.
5) следующее предложение.