A cook will be immediately fired if he is found in the kitchen. A. smokeB. smokingC. to

问题补充：

A cook will be immediately fired if he is found in the 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：

B。find 后可接现在分词（表示动作在进行）或过去分词（表被动关系）作宾语补足语，但是不接不定式。另外，由于he 与 smoke 是主动关系，故选 B。