Question

I think ________ is very hard ________ me ________ a foreigner．

1. A.
   that, for, to understand
2. B.
   it; of; understand
3. C.
   it; for; to understand
4. D.
   that; of; to understand

Answer 1

C
解析：
It is+形容词+for sb．to do sth．是一个句型，意思是“对于某人来说做某事是怎么样的”。it是作形式主语的，真正的主语是后面的动词不定式。