问题补充:
The children went back home from the grammar school, their lessons for the day.
A. finishing
B. had been finished
C. finished
D. had finished
答案:
A. finishing
B. had been finished
(答案→)C. finished
D. had finished
解析:考查独立主格结构。分析题目结构可以看出,“their lessons for the day”部分不能是句子,因为前后都没有连接词。所以空格处应填入过去分词,表示被动和完成意义。“their lessons finished for the day”构成的是独立柱个结构,在句中作状语。