Sorry we don’t allow in the lecture room.A. to smokeB. smokeC. smokingD. to smoking

问题补充：

Sorry，we don’t allow in the lecture room.

A. to smoke

B. smoke

C. smoking

D. to smoking

答案：

A. to smoke

B. smoke

(答案→)C. smoking

D. to smoking

解析：

试题分析: 句意：对不起，我们不允许在演讲室吸烟。smoke吸烟；allow允许，后接动名词，允许做某事，故选C