The victims of the accident demanded that the case _____ into at once and they _____ a reasonable explanation and a just treatment.

A．would be looked; would be given

B．should look; give

C．be looked; be given

D．be looked; give

婴儿对以下四种颜色的掌握顺序应是( )。

A．红、蓝、白、灰

B．白、红、蓝、灰

C．蓝、红、白、灰

D．红、白、蓝、灰