Knowing office rules whether or not is always of great importance especially for young

问题补充：

Knowing office rules, whether or not, is always of great importance, especially for young job seekers.

A. written

B. writing

C. being written

D. having been written

答案：

(答案→)A. written

B. writing

C. being written

D. having been written

解析：考查分词用法。Office rules与write构成被动关系，使用过去分词。句意：对于年轻的寻找工作的人来说，了解办公室规则无论有没有被写下来是非常重要的。