The narrator hid the old man under the floor (board, bored).
Board
When the old man sprang up from his bed he could not (see, sea) anything because it was so dark.
See
The narrator was the only one who heard the heart (beet, beat).
Beat
The narrator killed the (poor, pore, pour) old man.
Poor
The officers walked right (passed, past) the dismembered old man.
Passed
The old man had a feeling someone or something was in his room and would not (lay, lie) down.
Lie
The narrator waited (for, four) the old man to lie back down.
For
The narrator took a whole (our, hour) to put his head in the old man's bedroom door.
Hour
The old man was kind (to, too, two) the narrator.
To
The narrator wanted the officers to (here, hear) how fatigue he was, so invited them in.
Hear