根据句意及首字母的提示，补全单词。
1. I was waiting for the school bus but it didn't come. Then I r     _    it was Saturday.
2. Have you ever forgotten a r    _      birthday?
3. Tom was e      _   because he had stayed up all night working.
4. Don't forget to l     _    the door when you go out.
5. I will go to the c    _     party tonight. Would you like to go with me?