Unit 1 Welcome back to school!
12
Unit 2 My family
22
Unit 3 At the zoo
32
Recycle 1
36
Unit 4 Where is my car?
46
Unit 5 Do you like pears?
56
Unit 6 How many?
66
Recycle 2
70
Appendix 1:Words in each unit
72
Appendix 2:Vocabulary
74
Appendix 3:Useful expressions
