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Лучший Ответ!
2014-04-02T21:25:50+00:00
1.  Здесь все утверждения подходят.

b)  
People have never travelled as much as today. Nowadays travelling is very popular. Peopleon our planet can’t live without travelling now. Tourism has become a highly developed business. There are express trains, cars and jet-air liners all of that provide you with comfort and security.

4. 

travelling for a purpose
- to learn a foreign language, to gain some working experience overseas, to visit business partners, to take part in a research expedition, to visit friends abroad to escape daily routine for a while.

travelling for pleasure
to relax on the beach, to practice hobbies like scuba diving or mountain climbing, to do some sightseeing, to participate in some international cultural events.