Hmm I would change one building, I will change the whole building to a movie theater!
I can watch a movie with an extremely big screen!
It would be better than the I-max movie, which is trending these days.
I want to watch Haikyuu movie with it!
It will be really exciting!

“To the extent that you did it to one of the least of these my brothers, you did it to me.” — Matthew 25:40
= 
Hmm, I would change one building; I would change the whole building into a movie theater!
I can watch a movie on an extremely big screen!
It would be better than the I-max movie, which is trending these days.
I want to watch the Haikyuu movie with it!
It will be really exciting!
= "would" is used to describe a hypothetical situation 
= "change - into" means to transform
= when talking about watching something using a screen, we normally use "on"
= This is great!