不属于营气特点的是（）

A.贯心脉

B.泌其津液

C.注之于脉

D.化以为血

E.以荣四末

-Could you tell me       last night?

-Er, I was watching Euro 2004 at home.[ ]

A. what you were doing        

B. what were you doing

C. what you are doing          

D. what are you doing