by the time it had been taken over by Oxford University
by the time it had been taken over by Oxford University
By the time _police arrived,_ injured had all been taken to
By the time we got to the square,we found it had been e_____
twenty trees had been planted by the time we left
man entering work positions that have been taken over by
"By the time we got on the train,somebody had taken the last
By the time he got to the airport,the plane had taken off.改为
When the dolpin ( ) by sea ,it had been killed
He had only taken the time to assure himself of its truth by
Had it not been by an accident
over the years the cave wall had been shaped by 为什么用过去完成时
Every possible measure have been taken by the government to