问题补充：
It’s nice the doctor to devote all the time he has for the patients.
A. of; to care
B. for; to care
C. for; to caring
D. of; to caring
答案：
A. of; to care
B. for; to care
C. for; to caring
(答案→)D. of; to caring
解析：句意：那个医生将他所拥有的全部时间用在治疗病人上真是太善良了。对于It is+adj+of sb to do sth句型中介词of的选择要遵循的原则就是：形容词为描述人的品质时，如kind，nice，stupid等用介词of，表示某人做某事所体现出来的品质。devote sth to doing sth意为“将……用在做某事上”，本句中devote的宾语为all the time he has，其中he has为一定语从句，修饰all the time；后面的to为介词；故选D。
