Because our work is very busy，so we need to relax at midday． -考呗网

单选题Because our work is very busy，so we need to relax at midday．

B[分析]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。

1In general。the ancient Romans were a practical people．

2We are delighted to establish business relationship with you．

3We have been told that under no circumstances we can use the telephone in the office for personal affairs__________．