题目内容：

China is becoming stronger and stronger. It is no longer_________ .
A. what it used to be B. what it was used to being C. what it used to being D】what it was used to be

优质解答

A
连接代词what,which,who,whom,whose除在句子中起连接作用外,还 可在从句中从当主语、表语、定语.本题的表语从句缺少表语,used to be 是固定的,表示过去的状态,现在已 经不是这样了,故选A.