The computer ______(turn)off now.Who ____(turn)it off?

问题描述:

The computer ______(turn)off now.Who ____(turn)it off?

句子的意思是:电脑已经关了.谁关的?
所以第一个空应该是完成的时态,表示过去的事对现在的影响,填has been turned
第二个空问的是过的动作,所以用过去式,填turned