常见的企业工程选址、总平面布局应考虑的因素有（）。

A.周围环境

B.企业规模大小

C.厂（库）址的地形条件

D.当地的主导风向

E.员工数量

It's important _____the piano well.    [ ]

A. of him to play          

B. for him to play  

C. of him playing          

D. for him playing