Câu 5 là Russia also sells flights in fighter jets while China............

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Exercise 3: Thêm mệnh để để tạo câu phức Complex sentence E.g., Joggers were out running around the track although they were freezing cold. 1. Since she had a demanding job... 2. If camping in the mountains or beaches is cheap, 3. Foreign travel is expensive even though....... 4. Trave ...