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。