根据上下文和首字母提示,补全下列单词。 1. My pens and books are in my b______. 2. I don't have a pencil s______. Do you have one, Tom? 3. Do you have a n______? You can take notes (记笔记) in it. 4. This is my phone number. You can c______ me. 5. What's this i______ English?