Having finished the work, .
A. it was almost six o'clock
B. a postman came and delivered the evening paper and some letters
C. supper had already been prepared
D. we had a rest and then had supper
网友回答
A. it was almost six o'clock
B. a postman came and delivered the evening paper and some letters
C. supper had already been prepared
(答案→)D. we had a rest and then had supper
解析：现在分词作时间状语，前后主语要一致。