Question

Walter offered us a lift when he was leaving the office, but our work ______, we refused his offer.

A. not finished    B. had not been finished

C. not finishing    D. not having finished

Answer

A

【解析】

考查独立主格结构。句意：当Walter离开办公室的时候，主动让我们搭便车，但是因为工作没有完成，我们拒绝了他的帮助。连词but引导两个并列句中Walter offered us a lift when he was leaving the office 和we refused his offer. 说明“our work __”不能是完整的句子；名词短语our work与动词finish构成被动关系，而CD两项都表示主动。B项与our work构成了一个完整的句子our work had not been finished，不符合本句的句子结构。只能使用独立主格结构our work not finished。故A项正确。