I hear one third of the books in wuhan library___new.A is B are C_英语解答

I hear one third of the books in wuhan library___new.A is B are C was D were
我们老师说答案是C,可我觉得答案是B,

人气：398 ℃　时间：2020-06-14 03:17:54

解答

B are
one third of the books 三分之一的书本,bending不止一个,好多,用复数
明白了没?