Question

【题目】The doctor spent almost five hours _______ on the patient.

A.operatedB.operatingC.to operateD.operate

Answer 1

【答案】B

【解析】

句意：医生花了将近五个小时给病人做手术。

A. operated操作，动词过去式；B. operating动名词；C. to operate动词不定式；D. operate动词原形。operate on 给……做手术。spend +时间+doing sth花费时间做某事，故选B。