–What should parents do when their children have some problems?
--I think it’s for them to be there with their children.
A. impossible
B. important
C. impolite
D. difficult
网友回答
A. impossible
(答案→)B. important
C. impolite
D. difficult
解析:根据问句的内容,可知答语的内容,it ‘s important for sb to do sth,可知答案为B