关于雅思阅读原文：Only two have collapsed during the past 1400 years.

关于雅思阅读原文：Only two have collapsed during the past 1400 years. During the past two years与in the past two years区别 What _____you _____(do) during the past two years? in the last two years/during the last two years/in the past in the past two years It during the past five years 英语七选五（104）During the past one hundred years,there have been in the past two years事态 in the past two years 是什么时态 Great changes _______in the past two years. For the past two years,I have been busy preparing for the ex during the past 20 years 和 over the past 20 years一样吗?