Lesson 68 Persistent
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Lesson 67 Volcanoes
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Lesson 66 Sweet as honey
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Lesson 65 Jumbo versus the police
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Lesson 64 The Channel Tunnel
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Lesson 64 She was not amused
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Lesson 62 After the fire
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Lesson 61 Trouble with the Hubble
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Lesson 60 The future
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Lesson 58 A blessing in disguise
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