It was in 2005 when I was here on business I found Chengdu so fortable for people to live in.
A. when
B. before
C. that
D. which
网友回答
A. when
B. before
(答案→)C. that
D. which
解析：考查强调句：强调句的结构是it is /was+被强调部分+that/who+…，这句话强调的是in 2005 when I was here on business，句意：就是在我在这儿做生意的2005年我发现成都是适合人生活的好地方。选C。