1 . He g________(逐渐地) realized that he had been wrong about his decision and apologized for his mistake. （根据中英文提示填空）

2 . It takes a lot of c________(勇气) to speak up for what you believe in, especially when you know that it might not be a popular opinion. （根据中英文提示填空）

3 . I plan to a________(参加) the conference next month to learn about the latest developments in my field. (根据中英文提示填空)

4 . It’s w　　　　　　　　(明智的) to save money for a rainy day, so you have a financial cushion (缓冲) in case of an emergency. （根据中英文提示填空）