Unit 1 What's the matter? Unit 2 I'll help to clean up the city parks. Unit 3 Could you please clean your room? Unit 4 Why don't you talk to your parents? Unit 5 Whatwereyoudoingwhentherainstormcame? Unit 6 An old man tried to move the mountains. Unit 7 What'S the highest mountain in the world? Unit 8 Have you read Treasure Islandyet? Unit 9 Have you ever been to a museum? Unit 10 I've had this bike for three years. 附录: 1.动词索引 2.形容词、副词索引 3.连词、介词索引 4.固定搭配索引
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