( )：心脏 节拍：( )

A．泵 作曲家

B．脉搏跳动 指挥

C．健康 音乐家

D．生命 音乐

I don't know the man        came to our party last night. Can you tell me       he is?       [ ]

A. whom; who            

B. who; that      

C. /; who                

D. who; who