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13. C. the 14. B. can speak 15. A. doesn't often buy 16. B. so 17. C. because 18. D. won't buy 19. B. But 20. D. reduce 21. A. do 22.A.might 23.B.so 24.A.talked 25.B.easy 26.D.polluted 27.A.take off 28.C.suburban 29.B.The car is new, isn't it? 30.A.It's my pleasure. 31.C.but -> and (Although...small, and it is beautifully designed.) 32.C.used to living -> used to live (When Mary was a little girl, she used to live with her grandparents in the countryside.) 33.A.industrial -> industrious (We like Veronica because she is industrious, friendly, and helpful to everyone.) 34.B.of (Online shopping is one of the fastest growing areas of the Net,) 35.A.to go (Customers don't have to go to the shopping centres,) 36.C.a (shops are open 24 hours a day) 37.D.These (These sites search the net for a product and then show you how much)