问题
选择题
Our school is no longer ______ is was 10 years ago, _______ it was not well equipped.
A．what; which
B．that; which
C．what; when
D．that; where
答案
答案：C
表语从句中应用what 引导，充当从句的主语，关系副词when在引导的非限制性定语从句中作状语，修饰先行词10 years ago。故选C。