1 Circle the correct words to complete the text. The world on 1st November 1998 and he is still (2) walk / through South, Central and North America. He is the first person who has (4) ever / never crossed the Bering Strait Karl Bushby (1) started / was starting walking around walking. He (3) has already walked / already walked from Alaska to Russia on foot. Around the Bering Strait, he (5) has become / became terrified of polar bears. They (6) attack often / often attack humans when they are hungry. Luckily, they didn't (7) tried / try to get into his tent at night when he was camping there. However, according to Bushby, the Bering Strait wasn't (8) more / as terrifying as the Darien Gap, the tropical jungle between Colombia and Panama. He says the Darien Gap was (9) more frightening / the most frightening than any other place, While he was (10) walked / walking through the jungle there, he became very frightened of the Colombian guerillas. At one point, he was (11) more / too frightened to walk, so he swam down a river full of alligators for (12) a few / a little days.Busby (13) gets / has got fitter since he started his walk. And he says walking has made him (14) more ambitious / most ambitious and more responsible. He loves (15) spend / spending time in the world's wildest places. But he has been lonely (16) many / some of the time. So walking has taught him (17) a lot / some of things about his most important friendships and relationships. Karl (18) isn't / doesn't walking for a special reason. He doesn't (19) want / wants to get rich from it or make money for charity. Apparently, every day people in cars offer him lifts, and every day he (20) says / is saying 'no thank you'.