Question

It was a meeting ________ importance I did not realize at that time．

1. A.
   that
2. B.
   which
3. C.
   its
4. D.
   whose

Answer 1

D
从句子结构看出，meeting后面为定语从句，可排除C项；根据意义分析，当时我没有认识到的是“会议的重要性”，所以应由whose引导该从句，并在从句中作定语修饰importance。