Answer:
While I nodded nearly napping, suddenly there came a tapping...
Step-by-step explanation:
This is an example of alliteration written by Edgar Allen Poe
Another example is:
Sally sells sea shells by the sea shore.
The shells she sells are sea shells I'm sure
For if she sells sea shells on the sea shore
I'm sure the shells she sells are sea shells.
This is the repetition of the sh sound