What is the three act structure? How does protagonist change throughout it?
The three act structure is a common framework of a story or plot used by nearly all narratives, whether they be in print, on film or any other media. The audience learns of the motivations of the protagonist (or hero) in Act 1 - which culminates on the inciting incident that leads the protagonist to take on their "quest" or "challenge". Act 2 builds on the stakes by showing the protagonist attempting (and often failing) to overcome obstacles (usually leading to the protagonist uncovering some vital inner quality they much attain to overcome the outer challenge). The third act is the climax where the protagonist and the antagonist must square off and a resolution (either positive or negative takes place) followed by the falling action (or story wrap up basically).
What was the Hollywood Studio System and how did it use vertical integration?
The "Studio System" took place between the 20's and 60's and basically gave a monopoly of film production and distribution to a few major Hollywood film studios. These companies owned not only all the major production lots but also controlled all the distribution channels and theaters. Often this term connotes the negative impact the studios had on actors, writers and other artists who were locked into working for only one major studio at a time.
How would you differentiate between interrogative, declarative, imperative and exclamatory sentences?
Interrogative sentences always ask a question and end with a question mark, declarative sentences make a statement or relay an idea, Imperative sentences issue a request or command and exclamatory sentences express strong emotion and typically end with an exclamation mark.