根据句意及首字母提示补全单词，使句子完整正确。
1. Bob is a quiet boy. He feels nervous to speak in p_________ .
2. I have a bad cold and I c_________ a lot.
3. Don't b_________ the school rules when you are in the school.
4. Who is the w_________ of the writing contest?
5. My teacher e_________ me not to give up studying English.
