It's good ------- you to drink some milk every day.是用 of 还是

for (of通常用于描述内在品质,如It's so good of you to help me。=You are so good to help me。for指某一具体行为对人的影响。It's good for you to drink some milk every day。=To drink some milk every day is good for you。) 再问： it is good ________ you to be crazy about english! 再答： 选for,指对英语疯狂这种行为对你有好处。