题目内容

All the task ______ ahead of time, they decided to go on holiday for a week.
A.had been finishedB.were finished
C.having been finishedD.been finished
C
考察独立主格结构。本题逗号前后两部分之间没有连词,什么逗号前面的不是一个完整的句子,故AB排除。D项的结构不完整。All the task having been finished="After" all the task has been finished.
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