The sentence which uses quotation marks correctly is: "How are your classes?" asked Xavier. When using quotation marks with a question sentence, always include the question mark inside the quotation marks and a comma after the quoted sentence is no longer necessary.
The theme of Robert Frost's poem is the destuctive potential of hatred and desire. In his poem, Frost explores with amazingly eloquent brevity two forces which have the potential to bring destruction to the world. The first of these two is desire, which Frost likens in heat and intensity to fire
Roman roads is an adjective phrase. Roman is an adjective that expresses nationality and modifies roads
Military success is an adjective phrase. Military is modifying success.
