单选题 Because our work is very busy, so we need to relax at midday.
A．We are very busy, B．Our work being busy,
C．Our work so very busy, D．Because our work so very busy,

【正确答案】 B
【答案解析】[解析] 结构应用
本句考察的是独立结构：划线部分在句中作状语，但状语的逻辑主语与主句的主语不一致，因此用独立结构作状语，因此B为答案。