In the past twenty years,many tall buildings have been built in our city.Look!This is a _______.A 70-floor building B 70-floors building C 70-floor buildings D 70 floors buliding

over the past twenty years 还是in the past twenty years China has changed a lot in the past twenty years a lot of -----(move) out of the mountains in the past twenty yearsa lot of people-----(move) out of the mountains in the past twenty years In the past,the boss made the workers ____ (work) twenty hours a day in this area.over-----of the trees have been damaged in twenty the past twenty yearsA two thirds B 60 percents C 60 th percent 选什么 He has made much progress in his field in the past twenty years.能换成since the past 20 years么 英语翻译It;s twenty past three oh the metting will begin in twenty minutesI heared the metting has been put off we sill have forty minutes left In the past twenty years,Lau has made over one hundred films.句中 In the past twenty years 是一个时间段.所以用了现在完成时has made .那么是不是只要句中有一个时间段出现就用现在完成时? after four classes in the ( ) I have lunch,I often have lunch at twenty past elevenafter four classes in the ( ) I have lunch,I often have lunch at twenty past elevenA;morning B afternoon C evening in the past造句 Memory in the past in the past two in the past翻译 ：in the past century in the past long in the past few Trapped in the past in the past