-It is selfless the doctor to devote all the time he had for the patients. ---I think

问题补充：

---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：

A. for; to care

B. of; to care

C. for; to caring

(答案→)D. of; to caring

解析：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。