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英语题目AB有何区别The work()ahead of the schedule,they went to the s

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英语题目AB有何区别
The work()ahead of the schedule,they went to the seaside to have some fun.
A.had been finishedB.having been finished.
英语题目AB有何区别The work()ahead of the schedule,they went to the s
The work()ahead of the schedule,they went to the seaside to have some fun.
A.had been finishedB.having been finished
选 择A,被动语态的过去完成时态,工作已提前完成了,他们去海边玩.
B仅仅是个分词结构,不能做谓语