注意：此页面搜索的是所有试题
题目内容
（统招专升本-----英语）
This is the most difficult book ______ .
A. what I have ever read B. which I have ever read
C.I have ever read it D. that I have ever read
A. what I have ever read B. which I have ever read
C.I have ever read it D. that I have ever read
参考答案