polite的副詞形式是什么?

　　例句：

　　She began speaking politely, even correctly.

　　她開始禮貌地講了起來，甚至還很得體。

　　They spoke to me very seriously but politely.

　　他們非常嚴(yán)肅但又很有禮貌地與我談話。

　　He offered the boys some coffee. They declined politely.

　　他要給男孩們來些咖啡。他們禮貌地拒絕了。