At the conference, people of different _______ were given a chance to exchange theirs with each other.
38. Nowhere else in the world______ cheaper tailoring than in Hong Kong.
37. I tried all I could do ______ the topic at the meeting, but failed.
36. I felt quite ______ when I made my first speech in front of so many people.
35. Global oil prices ______ sharply in the past two years.
34. It was _______ back home after the experiment.