问题
选择题
Great changes have taken place in that school. It is no longer ___ it was 20 years ago, ___ it was so poorly equipped.
A．what, when
B．that, which
C．what, which
D．which, that
答案
答案：A
It is no longer ___ it was 20 years ago中，___ it was 20 years ago是表语从句，且句中缺少was的表语，第一空用what；___ it was so poorly equipped.是定语从句，先行词是20 years ago，在句中作时间状语。所以选A。
