— Who are you waiting for?— the man wounded in the left leg. A. The doctor will operate o

问题补充：

— Who are you waiting for?

— the man wounded in the left leg.

A. The doctor will operate on

B. The nurse to be looked after

C. The doctor to operate on

D. The nurse will look after

答案：

A. The doctor will operate on

B. The nurse to be looked after

(答案→)C. The doctor to operate on

D. The nurse will look after

解析： 考察不定式用法。本句中的不定式短语to operate on the man wounded in the left leg是对前面的名词the doctor进行的修饰限定。句意：—你在等谁？—在等那个给左腿受伤的人做手术的那个医生。本句的不定式表示将来的事情。句中的不定式相当于定语从句who will operate on the man wounded in the left leg。故C正确。