22.None of ___ books should be taken out of ___ room without ____ permission of ____ librarian.

题目

22.None of ___ books should be taken out of ___ room without ____ permission of ____ librarian.
22. None of ___ books should be taken out of ___ room without ____ permission of ____ librarian.
用an a the填空..
填哪一个,为什么?
答案是22. the, the, the, the
为什么呢?

答案

the在这里表示特指
这些书,这个房间,这个图书管理员