In the past few years there __great changes in my hometowmn.A.have been B.had been.我看到这道题的答案是A,但是为什么是现在完成时,不是过去完成时呢?in the past few years是不是就是现在完成时的标志啊?
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![In the past few years there __great changes in my hometowmn.A.have been B.had been.我看到这道题的答案是A,但是为什么是现在完成时,不是过去完成时呢?in the past few years是不是就是现在完成时的标志啊?](/uploads/image/z/4245987-3-7.jpg?t=In+the+past+few+years+there+__great+changes+in+my+hometowmn.A.have+been+B.had+been.%E6%88%91%E7%9C%8B%E5%88%B0%E8%BF%99%E9%81%93%E9%A2%98%E7%9A%84%E7%AD%94%E6%A1%88%E6%98%AFA%2C%E4%BD%86%E6%98%AF%E4%B8%BA%E4%BB%80%E4%B9%88%E6%98%AF%E7%8E%B0%E5%9C%A8%E5%AE%8C%E6%88%90%E6%97%B6%2C%E4%B8%8D%E6%98%AF%E8%BF%87%E5%8E%BB%E5%AE%8C%E6%88%90%E6%97%B6%E5%91%A2%3Fin+the+past+few+years%E6%98%AF%E4%B8%8D%E6%98%AF%E5%B0%B1%E6%98%AF%E7%8E%B0%E5%9C%A8%E5%AE%8C%E6%88%90%E6%97%B6%E7%9A%84%E6%A0%87%E5%BF%97%E5%95%8A%3F)
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