Those should be a totalon smoking in office for our health.A. ruleB. banC. regulationD. pe

问题补充：

Those should be a totalon smoking in office for our health.

A. rule

B. ban

C. regulation

D. permission

答案：

A. rule

(答案→)B. ban

C. regulation

D. permission

解析：句意，为了我们的健康，在办公室应该完全禁止吸烟。rule规定 ban禁止 regulation规章 permission允许，根据题意，故选B。