Mark the letter A, B, C,or D on your answer sheet to indicate the correct answer to each of the following questions from 17 to 18.

Put the sentences (a-c) in the correct order, then fill in the blank to make a logical text.

The island of Okinawa in Japan has some of the oldest people in the world. It’s famous for its high number of centenarians – men and women who live beyond 100 years of age. Some of the reasons for their good health are ... 

a. Secondly, they rarely buy food from a supermarket.

b. Firstly, they regularly do gardening and grow their own fruit and vegetables.

c. Moreover, they do regular exercise, go swimming and lead active lives.