据句意及单词首字母完成句子。

1. He is h       , so he will pass the exam.

2. Students are s         to keep the classroom clean.

3. She didn't r            home until 11:00. 

4. L        , he found his book that he had lost.

5. To my s           , Tom did come to the party.

通过“部门号”字段建立salary表和dept表间的永久联系。