_知识拓展（学生版）..flv

Lesson 59-60 Is that all_知识拓展（学生版）.51好－资－源.flv - 10.36MBLesson 57-58 An unusual day_知识拓展（学生版）.51好－资－源.flv - 7.49MBLesson 55-56 The Sawyer family_知识拓展（学生版）.51好－资－源.flv - 24.45MBLesson 51-52 A pleasant climate_知识拓展（学生版）.51好－资－源.flv - 38.69MBLesson 49-50 At the butcher's_知识拓展（学生版）.51好－资－源.flv - 11.86MBLesson 47-48 A cup of coffee_知识拓展（学生版）.51好－资－源.flv - 9.39MBLesson 45-46 The boss's lette_知识拓展（学生版）.51好－资－源.flv - 17.32MB_知识拓展（学生版）.51好－资－源.flv - 17.50MBLesson 41-42 Penny's bag_知识拓展（学生版）.51好－资...