By the end of last month, Jacob_____more than twenty million dollars on the ruined castle.[ ]

A. has spent

B. spends  

C. would spend    

D. had spent

对此应如何处理

A．鼓励咳嗽、拍背

B．早下床活动

C．镇静吸氧

D．蝶形胶布固定伤口

E．定时换药应用抗生素