— Great changes have taken place in Putian City .I can hardly recognize it .
—-You are right .It is no longer it used to be ten years ago .
A. than
B. that
C. as
D. what
网友回答
A. than
B. that
C. as
(答案→)D. what
解析： 考查名词性从句。根据题意设空的句子意思为：它不再是十年前过去那个样子了。It is no longer后是一个表语从句，从句中it used to be后缺表语，所以选D。