根据句意及首字母的提示，补全单词。

1.  He is no longer b_____ of the class.  He has become a top student.

2.  Finally, he passed the f_____ exam.

3.  He needs to make money to s____   his family.

4.  The_____ thing that happened this week is that I didn't pass the exam.

5.  I have the a_____ to do the work.

医疗保险基金政府承担大部分，劳动者和用人单位根据实际情况承担小部分。