I.
1-e; 2-g; 3-a; 4-f; 5-d; 6-c; 7-b
II.
1. check out
2. full board
3. passer-by
4. tourist attraction
5. beauty spot
6. travel agent
7. package tour
8. return ticket
9. customer service
10. jet lag
11. tour guide
12. duty-free
13. economy class
14. hand luggage
15. bus fare
III.
1. D
2. D
3. A
4. B
5. B
6. C
7. A
8. B
9. C
10. A
IV.
1. a - the - a - the
2. the - the
3. a - the - a
4. the - the
5. the - a - the
6. an - the - a
7. x - the
8. the - x - the - x
9. x - the - x - x
10. the - the - x