Is this app completely free?

The excerpt is from a longer essay on huckleberry finn by mark twain. what kind of support is used to develop the writer's main idea regarding how twain brought his characters to life?

Acontainer hold 4 gallons of lemonade. a large lemonade contains 16 ounces. how many large lemonades could the restaruant sell before they run out of lemonade?

How does edgar allen poe build suspense in “the raven”