问题
I find _________ hard _________ me to understand his handwriting.—It’s polite _________ you to say so. His handwriting is too bad.
A:that; of; for
B:it; for; of
C:that; for; for
D:it; of; of;
B:it; for; of
C:that; for; for
D:it; of; of;
正确答案是：
