We do not permit in the office.A. to smokeB. to smokingC. for smokingD. smoking

问题补充：

We do not permit in the office.

A. to smoke

B. to smoking

C. for smoking

D. smoking

答案：

A. to smoke

B. to smoking

C. for smoking

(答案→)D. smoking

解析：考察permit的用法, permit sb. to do sth. 允许某人做某事permit doing sth. 允许做某事根据题意我们不许再办公室内吸烟,选D.