---I don't suppose the police know who did it.
---Well, surprisingly they do. A man has been arrested and ______ nowA.has been questionedB.is being questionedC.is questioningD.has questioned
网友回答
B解析考查被动语态。因a man与question(审问)是被动关系，排除选项C和D；由now可知，要用现在进行时，排除A。