1. Popcorn came from North and South America. 2. B - grow 3. In the 1920s, movie theaters started selling popcorn. 4. They grow popcorn in US, Australia, Argentina, South Africa and South Europe. 5. D - butCâu trả lời: 1. Popcorn came from North and South America. 2. B - grow 3. In the 1920s, movie theaters started selling popcorn. 4. They grow popcorn in US, Australia, Argentina, South Africa and South Europe. 5. D - but