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. of; to caring
D. for; to caring
答案:
A. for; to care
B. of; to care
(答案→)C. of; to caring
D. for; to caring
解析:句意:医生奉献了所有的时间照顾这些病人,真的是无私。我觉得是的,他们好伟大。It is +adj+for sb +to do sth 对某人来说,做某事是…,本句型中形容词为物性的时候,介词用for,形容词如果是人性的,介词用of,第二空中he had 构成定语从句修饰前面的the time,构成devote sth to doing sth致力于做某事,故选C