They that the books be returned to the school library at once.A. hopedB. wishedC. demande

问题补充：

They that the books be returned to the school library at once.

A. hoped

B. wished

C. demanded

D. permitted

答案：

A. hoped

B. wished

(答案→)C. demanded

D. permitted

解析：考查虚拟语气。句意“他们要求那些书立刻归还图书馆。”demand“命令，要求”，后面的宾语从句用虚拟语气，即(should) +动词原形，should可省略。故选C。