Unit 1 In class Unit 2 In the library Unit 3 Is this your pencil? Unit 4 Where's the bird? Project 1 My puppy 三年级下学期期中提优测试卷一 三年级下学期期中提优测试卷二 Unit 5 How old are you? Unit 6 What time is it? Unit 7 On the farm Unit 8 We're twins! Project 2 A magic clock 三年级下学期期末提优测试卷一 三年级下学期期末提优测试卷二 听力材料与答案详解