D.
in the past fifteen years 是时态点,可知是现在完成时
然后后面changes是复数可知为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
英语人气:205 ℃时间:2020-03-01 06:20:00
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