be free to sb还是be free for sb

be free to sb 还是 be free for sb ..快速.. be free to sb还是be free for sb 是be free to sb 还是be free for sb be useful to sb还是for sb? be embarrassing to sb还是for sb? be important to sb还是for sb be rude to sb还是for sb 英语翻译answer to.be free for sb.一定要造句. be important to sb.还是be important for sb.区别? 是be difficult to sb 还是be difficult for sb? 谁能用sb be free to do sth sb be busy with sth sb b谁能用sb be free to do sthsb be busy with sth sb be busy in doing sth各造2个句子, be free to BRONE TO BE FREE be kind to do sth还是be kind to sb? be familiar to sb还是sth 英文语法：be sorry toor sb?是be sorry to sb还是be sorry for sb? be home to sb be surprised to sb?