无论如何都不可能用out，应该是你的书本有误。

congratulate的用法:1.congratulate sb. for sth. 为某事像某人祝贺 He is to be congratulated for his success.他将会由于取得的成就而受到祝贺。

2.congratulate sb. on...就…向某人表示祝贺We congratulated him on having passed the exam.我们祝贺他通过了考试。

3.congratulate that+从句I should congratulate you that you resisted the temptation. 我应向你祝贺，你抗住了这种引诱。

应填for/on。