问题
选择题
Great changes have taken place in that school. It’s no longer ___ it was 20 years ago, ____ it was so poor.
A．what, when
B．that, which
C．what, which
D．which, that
答案
答案：A
题目分析：考查名词性从句。句意：那所学校发生了巨大的变化。它不再是20年前的那所学校了，那时它很穷。第一空的表语从句中缺少表语，如：China is not what it used to be 30 years ago中国不再是30年前的中国了；第二空的先行词是20 years ago，后跟的是定语从句，从句中缺少时间状语，故填when。故选A。