It will be difficult ________ a robot________

试题详情及答案解析: It will be difficult ________ a robot_________ same things as a person,
A. of, to do B. for, to do C. for, doing; 答案：B; 试题分析：句意：对于机器人来说，和人似得去做一样的事情，太难了。It is difficult for sb to do sth对于某人来说，做某事太难了。
考点：考查固定句型。