2. Tourism is the temporary movement of people to destinations outside their normal places of work and residence, the activities ___31____ during their stay in those destinations, and the facilities created to ___32___ their needs.

Tourism is a luxury. Until recently, participation ___33____ restricted to the select few ___34___could afford both the time and money to travel. ___35___, increased leisure and higher incomes have combined to enable more people to join in. Improvements in transportation, and the growth of inclusive tours and other forms of relatively cheap vacation travel, have further ____36____ the opportunity to travel for pleasure. Today the majority of people in the developed world and increasing numbers in the developing countries are tourists ___37___ some time in their lives. Tourism is no longer the special right of a few but is an accepted and ___38____ expected part of the life-styles of a large and growing number of people.

Tourism is __39____major economic and social significance. More than 270 million tourists spend $92 billion（US）annually in places outside their own countries. This is one of the largest items in the world's foreign trade. With a world growth in visitor arrival rate of ____40___ 6 per cent per year, tourism is also one of the fastest growing economic activities. It is the most important export industry and earner of foreign exchange in many countries.

1).

A. undertaken

B. to undertake

C. undertaking

D. undertook