目录：
Unit 1 How can I get there?
Unit 2 Ways to go to school
Unit 3 My weekend plan
Recycle 1
Unit 4 I have a pen pal
Unit 5 What does he do?
Unit 6 How do you feel?
Recycle 2
Songs in each unit
Words in each unit
Vocabulary
Useful expressions
Proverbs
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