题目内容：

it is adj of sb to do与it is adj for sb to do区别
例题It is hard _______english
Aof us to learn Bfor us to learn Cof us learning Dfor us learning

优质解答

答案B
it is adj of sb to do,这里的形容词是形容人的性格特征的,如nice,kind clever,foolish,smart,都是形容人的,it is adj for sb to do就是普通的形容词,如hard,impossible,important
翻译：对我们来说学习英语太难了