问题补充：
The young man who we talked a lot about yesterday is unfit for the work, ?
A. didn’t we
B. did we
C. is he
D. isn’t he
答案：
A. didn’t we
B. did we
C. is he
(答案→)D. isn’t he
解析：考查反意疑问句。句意“昨天我们谈论的那个人不适合那份工作，是吗？”定语从句修饰的是The young man，反意疑问句和主句一致，unfit不表示否定，根据is可知，用isn’t。故选D。
