对于改、扩建工程，若要绘制噪声现状等声级图，可以采用( )布置测点。

A．等距法

B．放射线法

C．网格法

D．同心圆法

I told Sally how to get here, but perhaps I ______for her.

A．had to write it out

B．must have written it out

C．should write it out

D．ought to have writte it out