15. The new camera didn’t work _______ Minh took it back to the shop.

A. so                             B. because                 C. and                        D. since

16. This is the only one of the novels published recently______ translated in English.

A. that has ever been                                       B. which has ever

C. that have ever been   D. has ever been

17. I remember ______ him somewhere.

A. seeing                       B. see                         C. to see                    D. saw

18. A study shows that teenagers use text messaging to communicate with their friends more than  .

  A. to send email     B. to write letters C. emailing            D. texting

19. The                                                     communication services, along with chat rooms, continue to be an important part of children's online interactions.

  A. online                B. offline              C. direct                 D. phone

20. Email                                                 are often necessary to join social networking sites, online, and virtual worlds.

  A. address              B. information     C. senders              D. accounts