How does dramatic irony create suspense for the audience in this scene?

Dramatic irony creates suspense when Romeo kills Paris because the audience knows Romeo was banished for killing Tybalt, and they’re afraid he’ll be banished again.
Dramatic irony creates suspense because the audience fears Romeo will take tragic actions because he doesn't know what they know: Juliet is alive.
Dramatic irony creates suspense when Friar Laurence says Romeo and Juliet were married because the audience knows they tried to keep this secret from their families.
Dramatic irony creates suspense in the end, when the Montagues and Capulets end their feud because the audience knows their tragedy could have been avoided.