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:38
九年级英语上册Unit 2 《Saving the Earth》 Topic 3 What can we do at home to protect the environment？ (Section A)
27:42
九年级英语上册Unit 2《Saving the Earth》Topic 1 Pollution has caused too many problems.（Section A）
21:50
九年级英语上册Unit 1《The Changing World》Topic 3 The world has changed for the better.（Section D）
25:18
九年级英语上册Unit 1《The Changing World》Topic 3 The world has changed for the better.（Section C）
44:30
九年级英语上册Unit 1《The Changing World》Topic 3 The world has changed for the better.（Section B）
26:33
九年级英语上册Unit 2《Saving the Earth.》 Topic 2 All these problems are very serious. （Section A）
24:38
九年级英语上册Unit 2《Saving the Earth.》 Topic 1 Pollution has caused too many problems. （Section D）
34:21
九年级英语上册 Unit2 Topic2 《All these problems are very serious》 (Section D)
33:25
九年级英语上册Unit 2《Saving the Earth.》 Topic 1 Pollution has caused too many problems. （Section C）
九年级英语上册 Unit2 Topic2 《All these problems are very serious 》（Section C）
30:44
九年级英语上册Unit2《Saving the Earth .》Topic 2 All these problems are very serious.（ Section B）
36:59
九年级英语上册Unit 2《Saving the Earth.》 Topic 1 Pollution has caused too many problems. （Section B）
29:29
九年级英语上册Unit 3《English Around the World》Topic 3 Could you give us some advice on how to learn English well? (Section D)
30:58
九年级英语上册Unit 3《English Around the World》Topic 3 Could you give us some advice on how to learn English well? (Section C)
39:14
九年级英语上册Unit 3《English Around the World》Topic 3 Could you give us some advice on how to learn English well？（Section A）
38:35
九年级英语上册Unit 3《English Around the World》Topic 2 Some things usually have different meanings in different cultures.（Section D）
36:33
九年级英语上册Unit 3《English Around the World》Topic 2 Some things usually have different meanings in different cultures.（Section C）
36:23
九年级英语上册Unit 3《English Around the World》Topic 2 Some things usually have different meanings in different cultures.（Section B）
35:30
九年级英语上册Unit 3《English Around the World》Topic 2 Some things usually have different meanings in different cultures.(Section A)
28:33
九年级英语上册Unit 3《English Around the World》Topic 1 English is widely spoken throughout the world.(Section D)
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九年级英语上册 Unit2 Topic2 《All these problems are very serious 》（Section C）
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