根据句意及首字母提示补全单词。    

1. I'm going to Hawaii for v______ , and I'll stay there for two weeks.   

2. There are a lot of t______    in Thailand every year.   

3. when you v______ London, one of the first things you will possibly see is the Big Ben.   

4. I will be b______   to school next Friday.    

5. He is not watching TV. He is r______  videos now.