His friends insisted that Tony nothing to do with drugs and they insisted that he free immediately.
A. have, be set
B. had, was set
C. had, be set
D. have, was set
网友回答
A. have, be set
B. had, was set
(答案→)C. had, be set
D. have, was set
解析：考查insist的用法：句意：他的朋友们坚持说Tony跟毒品没有关系并且他们坚持要求他应该立刻被释放。当insist表示坚持认为的时候，不用虚拟语气；所以第一空填had，当insist表示坚持要求做某事的时候，后面的宾语从句要用虚拟语气。谓语用should do，should 可以省略，所以选C。