I ______ the piano quite well, but I haven't had time to play since last month.[ ]

A. will play      

B. have played        

C. played            

D. play

脓胸穿破胸壁，成为()
脓胸伴有气管食管瘘，则脓腔内可有气体，出现液平面，称为()
脓腔被纤维组织分隔成多个脓腔，成为()

A．全脓胸

B．局限性脓胸

C．多房性脓胸

D．脓气胸

E．外穿性脓胸