The victims of the accident demanded that the case at once.A. would be looked intoB. shou

问题补充：

The victims of the accident demanded that the case at once.

A. would be looked into

B. should look into

C. be looked into

D. look into

答案：

A. would be looked into

B. should look into

(答案→)C. be looked into

D. look into

解析：考查虚拟语气。Demand后从句用should加动词原形的虚拟语气，其中should可以省略，从句主语the case是动作对象，故用被动语态，选C。