20-21英语新教材外研版选择性必修第一册课件:Unit-6-Nurt突破语法大冲关has been doinghas been climbinghave been waitinghas been workinghas been phoninghave been buildinghas been ringinghas been dealingtypinghas wroteto gohave been studyinginonhave been listeninghave been wastinggoinghave been stayinghave been gettinghave been writting点击右图进入点击右图进入课课时时分分层层作作Thank you for watching!