Question

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.

Answer 1

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?

Answer 2

1. Was Christopher Columbus one of the best-known explorers? 2. Did the age of airplanes change travel crucially? 3. Did the age of airplanes make travel available to all people? 4. Did the cost of air transportation make travel available to everybody? 5. Did Christopher Columbus discover America? 6. Did Amerigo Vespucci discover America? 7. Was Afanassy Nikitin known in the West? 8. Did the first travelers use simple means of traveling? 9. Did the first travelers travel by air? 10. Were they familiar with air travel? 11. Did trains outdo ships? 12. Did trains outdo planes?