The patient was warned oily food after the operation. A. t o eat notB. eating notC. not t

问题补充：

The patient was warned oily food after the operation.

A. t o eat not

B. eating not

C. not to eat

D. not eating

答案：

A. t o eat not

B. eating not

(答案→)C. not to eat

D. not eating

解析：这题考查不定式的否定式：not to do，warn sb not to do“警告某人做”，句意是：病人被警告手术后不要吃油腻食物。选C。