A cook will be immediately fired if he was found in kitchen.A. smokeB. smokingC. to smoke

问题补充：

A cook will be immediately fired if he was found in kitchen.

A. smoke

B. smoking

C. to smoke

D. smoked

答案：

A. smoke

(答案→)B. smoking

C. to smoke

D. smoked

解析：“find”后接现在分词作主语补足语。此句中“smoking” 是主语“he”的补足语， 所以称为主语补足语。表示主动的正在发生的事。根据“immediately”可判断出“厨师当场被发现在厨房吸烟会被立即开除”。