Read this stanza from "The Raven." Back into the chamber turning, all my soul within me burning,
Soon again I heard a tapping something louder than before.
"Surely," said I, "surely that is something at my window lattice;
Let me see, then, what thereat is and this mystery explore–
Let my heart be still a moment and this mystery explore;–
'Tis the wind and nothing more."

This stanza contributes to the suspense of the poem because

-the reader knows what is making the noise while the speaker does not.
-the speaker and the reader wait again to find out what is making the noise.
-the tapping gets louder, which foreshadows that the noise is made by a bird.
-the wind gets stronger and makes more noise against the speaker’s window.