Read the following passage and mark the letter A, B, C or D to indicate the correct word or phrase that best fits each of the numbered blanks.

Air-travel is the most modem form of (25) _____________ transport and it (26) _____________ in the 20th century. Millions of people use airplanes for a variety of reasons. It is also extremely expensive to set up air-travel facilities. Some travel for business, others go on holiday (27) _____________ air and others use cargo planes to move their products from country to country very (28) _____________. Some courier companies now have their own fleet of planes ready to carry parcels and post more efficiently. There are different types of passenger services - some arc cheap and provide a ‘no-frills’ service which is good for short journeys. Other airlines provide passengers with a luxurious flying experience. Airports are getting busier and it is evident that (29) _____________ passengers and businesses than ever are using airplanes to get to their destinations.

25. A. main                             B. private                    C. public                      D. personal

26. A. was developed             B. is developed           C. developed               D. will developed

27. A. in                                  B. on                           C. by                           D. at

28. A. quick                            B. quickly                    C. quicker                    D. quickness

29. A. more                             B. less                          C. fewer                      D. much