免费课:Unit 1 Welcome back to school Part A
1Unit 1 Welcome back to school Part A
2 Unit 1 Welcome back to school Part B and C
3 Unit 1 Welcome back to school
5 Unit 2 My family Part B and C
免费课:Unit 3 At the zoo Part A
8 Unit 3 At the zoo Part B and C
10 Unit 4 Where is my car Part A
11 Unit 4 Where is my car Part B and C
13 Unit 5 Do you like pears Part A
14 Unit 5 Do you like pears Part B and C
17 Unit 6 How many Part B and C
19 Unit 5 Do you like pears Part A
20 Unit 5 Do you like pears Part B and C