问题
选择题
The country life he was used to _____ greatly since the opening policy.
A．change
B．has changed
C．changing
D．having changed
答案
答案：B
选B。The country life 是定语从句的先行词，同时也是句子的主语。而he was used to是定语从句，省略了关系代词that/which。
