D.
in the past fifteen years 是時(shí)態(tài)點(diǎn),可知是現(xiàn)在完成時(shí)
然后后面changes是復(fù)數(shù)可知為D
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there——great changes in our town in the past fifteen years.A was、B were、C has been D have been
there——great changes in our town in the past fifteen years.A was、B were、C has been D have been
英語(yǔ)人氣：881 ℃時(shí)間：2020-03-01 06:20:00
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