11. She thought it advisable that a janitor ( ) against any possible intruder.

29. In North America, first names are seen as friendly and ( ) of fondness and attachment.

28. Turning a blind eye to intracultural variations can lead to ( ) people from different backgrounds.

27.( ) the travel and business sections of any decent bookstore, and you' re likely to find many volumes detailing kaleidoscopic cultures around the world.

26. The university has a policy of hiring men and women of a variety of ages and cultures because diversity of experience and perspective gives it a competitive ( ).

25. When transmission speed is prioritized, instant messaging can beat both e-mail and telephone in ( )

24. As her mind reeled back in time, she wondered what she could possibly have done ( ).

23. It is recently found that two colleagues who are ( ) basketball fans or share a fascination with rare books are more likely to swap information on work.

22. We are so delighted to have you here; it is not often we are consulted by men of science, especially one of your ( ).

21. For whatever ( ) I know everyone would have been incredibly proud of you tonight.

20.“People who are sensitive can appreciate art better.” The relative clause in this sentence ( ).