He insisted the person referred put into prison at once.A. isB. beC. to beD. should be

问题补充：

He insisted the person referred put into prison at once.

A. is

B. be

C. to be

D. should be

答案：

A. is

B. be

(答案→)C. to be

D. should be

解析：句意：他坚持提到的那个人应该立刻被送到监狱。这里referred to与person之间是被动关系，，从句的主语是the person，insist当“坚持”讲时，后用虚拟should+动词原形，故选C。