单选题 When________to meet the needs of the business and its employees, the company has faced a lot of challenges.
【正确答案】 C
【答案解析】本题考查分词的运用。When引导的时间状语从句的主语与主句的主语都是the company,且谓语是be动词,所以从句的主语与be动词可以省略。主语与动词try之间是主动关系,所以应当选用现在分词结构表主动,由此确定本题答案为C)。