I. make up tail-questions: 1.christopher columbus was one of the best-knownexplorers. 2.the age of airplanes changed travel crucially. 3.the age of airplanes made travel available to all people. 4.the cost of air transportation didn't make travel available to eve--rybody. 5.christopher columbus discovered america. 6.amerigo vespucci didn't discover america. 7.afanassy nikitin was not known in the west. 8.the first travellers used simple means of travelling. 9.the first travellers didn't travel by air. 10.they were not familiar with air travel. 11.the trains outdid ships. 12.the trains didn't outdo planes.

1. wasn't he? 2. didn't it? 3. didn't it? 4. did it? 5. didn't he? 6. did he? 7. was he? 8. didn't they? 9. did they? 10. were they? 11. didn't they? 12. did they?

Jack robinson is a famous explorer. today he has come to the television studio to give an interview about his exciting life. oliver shade an interviewer, is talking to him: interviewer: mr. robinson, you have been spending  your whole life exploring  the world. but we know  that your special interest has always been  the british isles. when did you get  interested in travelling?   jack robinson: i can't tell you the exact day but i remember that when i was  a little boy l used to read  a lot. and once my parents gave  me a book about british geography. when was looking  through the book i saw  a picture of the lake district. l admired  the place greatly and at that moment decided  to become  a traveller. interviewer: when did you first go  to the lake district? jack robinson: when i left  school my father took  me on a journey to the north england and we spent  a few days in the lake district.  interviewer: what other parts of england have you explored?   jack robinson: i have been  to all the parts of the country and also to scotland, wales and ireland. but i have never been  to india where i am going  next monday. interviewer: next monday?   jack robinson: yes. we start  on october 12, and at the end of the month we arrive  in india.  interviewer: are you going  by sea?   jack robinson: yes, of course. i will take  part in the expedition to discover  some lost indian cities.  interviewer: isn't that great? i hope your journey will be  a success. the best of luck to you, sir.