"be left for sb to
"be left for sb to
be rude to sb还是for sb
be important to sb还是for sb
be embarrassing to sb还是for sb?
是be free to sb 还是be free for sb
是be sorry for sb 还是be sorry to sb
be free to sb 还是 be free for sb ..快速..
be important to sb.还是be important for sb.
be dangerous to sb/be dangerous for sb哪个对?
be adj to sb 与be adj for sb 区别
是be difficult to sb 还是be difficult for sb?
什么时候be+形容词+for sb,什么时候be+形容词+to sb