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最佳答案：It is hard for him to finish this task ahead of time
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最佳答案：为了提前完成任务,我们不得不加班.We have to work overtime in order to fulfill the task ahead of
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最佳答案：We have finished the teaching task of this term in advance.
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最佳答案：If you break them up into three groups,they will be able to finish the work befo
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最佳答案：Thanks to ,complete ahead of
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最佳答案：Thanks to your help, we could finish the work ahead of time
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最佳答案：可以的.有一点需要提一下,这里的‘in advance’有点多于,是纯属语法推导的句子.‘having been done’已经表示完成的意思了.没有‘in a
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最佳答案：王叔叔不但提前完成了生产任务,而且（工作质量也大幅提高 ）.
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最佳答案：他已经提前完成了组长安排给他的任务
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最佳答案：英语是：Thanks to your help, we could finish our task earlier.