They are trying      Wap版

试题详情及答案解析: They are trying what is going on around the world.
A、to look for
B、to find out
C、find out; 答案：B; 试题分析：try to do表示设法做某事；look for表示寻找的过程；find out表示找出，查明；句意；他们正在试图找出全世界正在发生着什么事？。结合句意，故选B
考点：考查非谓语动词及动词短语辨析。