11. London is home to people of many _______ cultures. A. diverse B. diversity C. diversify D. diversification 12. As soon as she came in I knew I _______ her before. A. have seen B. saw C. had seen D. would see 13. In some Asian countries, love is _______ to follow marriage. A. considered B. supposed C. made D. forced 14. You are not _______ to answer these questions, hut it would help if you did. A. required B. ordered C. suggested D. obliged 15. I knew him_______ I was a child. A. until B. when C. while D. during 16. Brenda_______ learning her part for the play. A. has already been finishing B. has already finished C. have already finished D. already finishes 17. You really can't _______ a thing that woman says! A. believe B. rely C. count D. imagine 18. My mother used to be a woman of great _______, but now she gets old and looks pale. A. beauty B. beautiful C. beautifully D. beautify 19. You'll be able to return to your homes when the fire _______ under control. A. will be B. is C. has been D. was 20. Some researchers have just _______ a survey of young people's points of view on contractual marriage. A. sent B. directed C. managed D. conducted 21. I am very _______ in the information you have given me. A. concerned B. surprised C. interesting D. interested 22. After the research _______, they presented their findings at a conference. A. had completed C. completed B. had been completed D. had been completing 23. Professor Berg was very interested in the diversity of cultures all over the world. A. variety B. changes C conservation D. number 24. By the time we_______to the camp, it will be dark. A. get B. will get C. got D. had got 25. The more _______ and positive you look, the better you will feel. A. confide B. confident C. confidently D. confidence