根据句意及首字母（汉语）提示，补全单词。

1. I remember being a ______(志愿者)once,

2. I used to be ______(害怕的)of teachers.

3. I remember losing a schoolbag ______(满的)of books.

4. We ______(筹款)10,000 dollars for the hospital.

5. I have more ______(自信)since Grade 8.