2. People believe that all letters _____ with mobile phones and emails.

3. Centuries ago, urgent long distance messages _____ by horsemen running days and nights.

4. When you enter the shop, the latest models of mobile phones _____ to you.

5. Many new features _____ to mobile phones by competing companies all over the world .

6. Usually, hundreds of consumers _____ before a new product is launched.

7. I  bought a new MP3 player online yesterday and I think it _____ to me by post now.

8. There is no doubt that internet _____ communication much easier than ever before.

9. As a matter of fact, the young _____ too much money on smart phones.

10. The prototype of a servant robot _____ for years and will be launched shortly.

11. People _____ thousands of ring tones this year.

12. Thousands of new inventions _____ at the Patent Office every year.

13. A course of ten years before, smart phones _____ as popularly as now.

14. Sony _____ the first personal stereo in 1989.

15. How much _____ each month working for that company?

16. Seatbelts _____ at landing and taking off.

17. A new password _____ each time you log into your email address.

18. Mobile phones _____ at Operation Theaters in hospitals.

19. Around 1879, telegraphs _____ to send messages.

20. _____ one of the first MP3 players _____ in Korea?