问题补充：
It’s generous them to donate money to UNICEF.
They think it’s important them to help poor children go to school.
A. to; for
B. for; of
C. of; to
D. of; for
答案：
A. to; for
B. for; of
C. of; to
(答案→)D. of; for
解析：本题主要考查的是It is +adj of/for sb to do sth 其中当对人的评价时用of，对于动作进行评价时用for，故选D
