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Lesson 1 - The Bus Driver / There is, was ~ / There are, were ~
Lesson 2 - Trip to the Future / There isn't, wasn't ~ / There aren't, weren't ~
Lesson 3 - The Flying Car / Is, Was there ~? / Are, Were there ~?
Lesson 4 - At the Station / Çü¿ë»ç ¿ø±Þ
Lesson 5 - Some Astronauts / Çü¿ë»ç ºñ±³±Þ
Lesson 6 - Space Trip / Çü¿ë»ç ÃÖ»ó±Þ
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