1.Popcorn machines are set up outside the buildings by enterprising salesmen
2.Many cinema owners saved their by selling business snacks themselves
3. Popularity of luxury cinemas has being increased in recent years.
4. Home made popcorm is prepared while watching a film on TV at home
Объяснение:
там ещё 5 и 6 вопрос есть, вдруг кому надо:
5. Why have cinemas sold popcorn...?
It became a popular snack food and more and more people began buying popcorn.
6. Why cannot popcorn be?
It is an integral part of the experience of watching a film.