He insisted that the book to the school library at once.A. returnB. should returnC. be re

问题补充：

He insisted that the book to the school library at once.

A. return

B. should return

C. be returned

D. would be returned

答案：

A. return

B. should return

(答案→)C. be returned

D. would be returned

解析：考查虚拟语气。Insist作“要求”讲后接宾语从句用(should)do，“归还书”要用“return books”所以用被动语态。句意：他要求立刻归还学校图书馆的图书。