Lesson 21 [00:03.42]第二十一课 [00:06.84]Just speak [00:07.85]说 [00:08.86]Mr Baker is a PE teacher in Australia. [00:08.86]在澳大利亚Baker先生是 一位体育老师. [00:08.86]He comes to Gao Wei's school.He has a video to show about hi...
