look at these sentences from the article and decide if they are fact (f) or someone's opinion (o)
1.lots of people do sport in their free time, but these people do extreme sports!
2.cliff diving is a very exciting extreme sport.
3.in this photo,he in boston harbour in front of 23,000 people.
4.Highlining is a great adventure.
5.the landscape is perfect.
6extreme paragliders can fly over 3,000 metres high