为了测定家中照明灯泡的实际电压，小钢做了如下的实验：关闭家中其它用电器，只开一盏标有“PZ220-100”字样的灯泡，他观察到家中标有“3000r/kW•h”字样的电能表在20min内转盘转了121转，此时小钢家照明电路的实际电压为______V．

He demanded that the naughty boy referred to just now________right away.[ ]

A. punish  

B. be punished

C. was punished  

D. be punishing