The General Manager suggests those found in the office would be fired immediately.A. smok

问题补充：

The General Manager suggests those found in the office would be fired immediately.

A. smoke

B. to smoke

C. smoking

D. smoked

答案：

A. smoke

B. to smoke

(答案→)C. smoking

D. smoked

解析：考查现在分词作宾补，find sb doing,句意：总经理表明那些在办公室被发现正在吸烟的人会立刻被开除。故选C。