问题补充:
Jack offered us a big meal when he was leaving the office, but our work , we refused it.
A. not finished
B. had not been finished
C. not having finished
D. wasn’t finished
答案:
(答案→)A. not finished
B. had not been finished
C. not having finished
D. wasn’t finished
解析:考查独立主格结构。our work not being 叫做 独立主格结构,这里做状语,表示原因,相当于 because our work was not finishedA, C 用的是主动式,显然不对。B 似乎对,但是两个并列句中间不能这么用逗号隔开。如果在we 前面加一个so就对了。故选A。