问题
选择题
---It is selfless ______ the doctor to devote all the time he had ________ for the patients.
---I think so, they are so great.
A．for; to care
B．of; to care
C．for; to caring
D．of; to caring
答案
答案：D
题目分析：句意:-这位医生把他所有的时间都奉献于照顾病人，他真是太无私了。-我也这样认为，他们很伟大。It is 形容词 of sb. to do sth.对某人来说做某事是……的；selfless 无私的，用来形容医生，故这里的介词用of；第二空用动词不定式的形式。故选D。