11. …………………. a conference in which participants in different locations are able to communicate with each other by using video technology. A. Video class B. Video school C. Video chatting D. Video conference 14. A smile is the most frequent___________. A. social media B. verbal language C. facial expression D. spoken language 15. ___________ are websites where users can freely type to communicate with one another in real time. A. Message boards B. Chat rooms C. F2F meetings D. Video Conferences 16. It’s difficult ___________ this message. Do you mind___ me? A. read /help B. reading/ helping C. to read/ helping D. reads/ helped 17. Our English teacher made us___________ fifty new words every week. A. to learn B. learn c. learned D. learning 18. He decided ___________ the problem on the phone instead of sending a letter. A. to explain B. explained C. explaining D. explains 19. Many people dislike___________ the public transport system at night A. used. B using C. uses D. to use 20. Are you fond of ___________ an I- phone X ? A. having B. has C. had D. to have