The chief editor demanded  that  the  article ________immediately.

A．must be submitted

B．would be submitted

C．submits

D．be submitted

施工现场临近高温、陡坎，深坑及高压带电区等处所均应设置临时遮拦及“（）”“（）”的标示牌；危险处所夜间应设红灯警示。