描述
欢迎使用
目录
Welcome
1 Friends
Wider world 1
2 My life
Review Units 1-2
3 Free time
Wider world 2
4 Around the world
Review Units 3-4
5 Shopping
Wider world 3
6 Party time
Review Units 5-6
7 School
Wider world 4
8 Entertainment
Review Units 7-8
Goodbye