On April 13th, 2012_______ press conference is held by Los Angeles PoliceDepartment at ___________crime scene of a shooting incident.
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.
33. My father made a promise ______ I got a good mark he would buy me a present.