He insisted that his plan carried out at once. A. would beB. could beC. was D. should be

问题补充：

He insisted that his plan carried out at once.

A. would be

B. could be

C. was

D. should be

答案：

A. would be

B. could be

C. was

(答案→)D. should be

解析：考查虚拟与我。动词insist有两层意思。表示坚持要求做某事的时候，后面句子使用should+动词原形的虚拟语气。表示坚持认为的时候，后面的句子使用陈述语气。句意：他坚持要要求他的计划立刻被执行。根据句意说明这里的Insist指坚持要求做某事。故使用虚拟语气，故D正确。