I’d like to start my own business next year – that’s I will face my big challenge in life.
A. why
B. when
C. which
D. what
网友回答
A. why
(答案→)B. when
C. which
D. what
解析：考查从句，从句I will face my big challenge in life不缺少成份，所以引导词在关系副词里选择，先行词是next year，所以是when，所以选B