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.
He likes candy chicken omg you don’t know
The three witches meet on a heath - This is how the play opens.
The witches hail Macbeth as Thane of Cawdor - It is Act 1, Scene 3
Duncan arrives at Inverness - Duncan arrives to with his attendant outside Macbeth's castle.
Lady Macbeth places the bloodstained daggers near Duncan’s guards.
Macbeth kills Duncan
Malcolm and Donalbain flee to safety - Act 2, Scene 3. When Malcolm and Donalbain flee the murder site.