Unit 1 What's the matter?
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Self Check
Unit 2 I'll help to clean up the city parks.
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Unit 3 Could you please clean your room?
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Unit 4 Why don't you talk to your parents?
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Unit 5 What were you doing when the rainstorm came?
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Unit 6 An old man tired to more the mountains.
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Unit 7 What's the highest mountain in the world?
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Unit 8 Have you read treasure Island?
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Unit 9 Have you ever been to a museum?
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Unit 10 I've had this bike for three years.
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Self Check
测试卷及参考答案（单独成册）
