根据句意及汉语提示，写出各单词的正确形式，每空填一词。
【小题1】After a long walk, he felt _________ (饥饿的) and thirsty.
【小题2】As we all know, hard work is the key to ___________(成功).
【小题3】You must check your papers _________(认真地) in the exams.
【小题4】We all take ___________(骄傲) in the great achievements of our country.