精选优质文档-倾情为你奉上高中英语各类从句综合练习55题1. _ is known to the world, Chinas Liu Xiang became the first Asian in history to win the mens 110m hurdles at the Olympic Games. A. That B. Which C. As D. It2. Living in the Central American desert has its problems, _ obtaining water is not the least. A. of which B. for what C. as D. whose 3. I dont know the reason _ you were absent from the meeting, but I am sure that someone will tell m