The manager entered the office and was happy to learn that four-fifths of the tickets ______. [ ]

A. was booked    

B. had been booked  

C. were booked    

D. have been booked

前列腺癌外照射配合内分泌治疗的好处是()

A．减低Gleason分级

B．降低PAS值

C．放射增敏

D．提高局部控制率和减少远处失败率

E．提高局部控制率