题目内容：

一道英语完形填空题求解
President P___(赦免） a Turkey
Every year,people cook and eat more than 45 million turkeys in the US for Thanksgiving.But one lucky turkey can live on that day.The US President will give it an official(官方的）"parden".This has become a t_____.On the day before Thanksgiving,the turkey comes to the White House.(以下省略,我会）

优质解答

pardens(由后文得知)
tradition(惯例,传统)