—Will Mr. Green be able to see me at 10:00 ? 

—Sorry, but he        fully until 3:30 unless there's a cancellation.[ ]

A. has occupied  

B. will occopy

C. is occupied   

D. has been occupied

患者沙某，遗精滑泄，神疲乏力，腰痛耳鸣，舌淡苔白，脉细弱。治宜选用（）

A.桑螵蛸散

B.六味地黄丸

C.知柏地黄丸

D.金锁固精丸

E.补中益气汤