填空题
shall have left for
Why didn’t you tell me you could me the money? I（）(本来不必...
填空题Why didn’t you tell me you could me the money? I（）(本来不必从银行借钱的）
The ship’s generator broke down and the pumps（）(不得不用手工操...
填空题The ship’s generator broke down and the pumps（）(不得不用手工操作) instead of mechanically.
It may be necessary to stop（）(每隔一定时间) in the learning p...
填空题It may be necessary to stop（）(每隔一定时间) in the learning process and go back to the difficult points in the lessons.
