19.　 Instead of spending your _____(假期)on a bus, in a hotel or sitting on the beach, you may want to try hiking.

18.　 Many of today’s travelers are looking for an unusual ______(经验) and adventure travel is becoming more and more popular.

17.　 They started to use English, but they also b ________ in　 some words from their own languages.

16.　 In 1776 America became an ______ (独立的) country.

15.　 In total, for more than 375 million people English is their mother t____.

14.　 You can listen to English songs on the radio or use English to c_________　 with people around the world through the Internet.

13.　 In only fifty years, English has ____(发展)into the language most widely spoken and used in the world.

12.　 There are more than 42 countries where the ______(大多数)of the people speak English.

11.　 I hate hiking and I’m not into c _______ music.

10.　 On the island, Chuck has to learn to live all _____(单独).