polite的副词形式是什么?

　　例句：

　　She began speaking politely, even correctly.

　　她开始礼貌地讲了起来，甚至还很得体。

　　They spoke to me very seriously but politely.

　　他们非常严肃但又很有礼貌地与我谈话。

　　He offered the boys some coffee. They declined politely.

　　他要给男孩们来些咖啡。他们礼貌地拒绝了。