.During the past two decades,research has ________ our knowledge of daydreaming.A.expanded B.emeDuring the past two decades,research has ________ our knowledge of daydreaming.A.expanded B.emergedC.descended D.conquered

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 two years/during the past two years有什么区别? in the past two 关于雅思阅读原文：Only two have collapsed during the past 1400 years.Only two Japanese pagodas have collapsed in 1400 years.我想不通..难道during the past 1400 years与in 1400 years意思一样 during the past与in the past的区别 during the past quarter-cenrury什么意思? in the past two years .During the past two decades,research has ________ our knowledge of daydreaming.A.expanded B.emeDuring the past two decades,research has ________ our knowledge of daydreaming.A.expanded B.emergedC.descended D.conquered 帮忙看一下这个英语句子有没有语法问题!I've gotten positive results in violin performance exams during the past two years. in the past two 怎么翻译?用法? in the past two years 是什么时态 in the past two years事态 during the past 50 years用于什么时态 During the past century需要涉及的时态是什么啊? during the past 20 years 和 over the past 20 years一样吗? in the past two years和over the past two years有什么区别? 英语翻译During the past two decades,there has been a tremendous growth in the availability of computerized methods for solving problems that previously were beyond solution because the time required to solve them would have been prohibitive.At th