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although he was lived with us four years,he...us much impres

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although he was lived with us four years,he...us much impression
答案是hasn`t left为什么不是didn`t leave或者doesn`t leave
doesn`t leave 时态就不对了,讲的是过去的事情.
选择题要求选出最恰当的答案,现在完成时强调过去的事情对现在的影响,在这句句子里比一般过去时要好.所以用hasn`t left而不是didn`t leave.