点击加载更多

• Sentence patterns 加入 06:00
• Difficult sentences
• Difficult sentences 加入 12:59
• Sentence translation
• Sentence translation 加入 12:52
• Unit 3 Social science
• Background
• Background 加入 07:25
• Structure
• Structure 加入 05:40
• Vocabulary
• Vocabulary 加入 06:44
• Sentence patterns
• Sentence patterns 加入 09:44
• Difficult sentences
• Difficult sentences 加入 06:50
• Sentence translation
• Sentence translation 加入 08:53
• Unit 4 Health promotion
• Background
• Background 加入 06:10
• Structure
• Structure 加入 06:55
• Vocabulary