It's wrong-----you to balme your parents.

判断for 还是 of
有一个办法
如果 后面的人称代词(you/me..),与前面形容词表语(这里是wrong)可以构成 you are wrong/ I am wrong / you are kind / she is nice这种主系表结构的,就用of
如不行的话,eg.It's good (for) you to exercise.
you are good 你是好的,还是 做锻炼是好的,后者对的,就用for sb.
所以这里 you are wrong 你是错误的,指责父母,所以填写of