Fill in the words according to the first letters of the words given.
(根据所给单词的第一个字母填入单词。)
1. You must put your rubbish in the b_______.
2. Dr.Bethune was a famous d_______.
3. Before 1979, Shenzhen was a s _______ town
4. His dad talked on his m _______ phone for a long time last night.
5. We talk quietly at the library. Sometimes we line up but we never p_______.