【题目】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
在线课程【答案】B
【解析】
试题分析：考查表语从句。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