Which two sentences contribute to the overall eerie mood of the adapted excerpt from "the fall of the house of usher" by edgar allan poe?
in this mansion of gloom i now proposed to myself a stay of some weeks. its proprietor, roderick usher, had been one of my closest friends in boyhood. but many years had passed since our last meeting.
a letter, however, had lately reached me in a distant part of the country. a letter from him, which, in its wildly insistent nature, had allowed no other than a personal reply.
the handwriting gave evidence of nervous agitation. the writer spoke of a kind of illness--of a disorder which oppressed him--and of an earnest desire to see me.
as his best and indeed his only personal friend, with a view of attempting, by the cheerfulness of my society, to provide some relief from his malady.

The handwriting gave evidence of nervous agitation. The writer spoke of a kind of illness--of a disorder which oppressed him--and of an earnest desire to see me.

Explanation: These two sentence would give an eerie mood to any piece of literature.

Hope this helps!   :)

In this mansion of gloom I now proposed to myself a stay of some weeks.

The writer spoke of a kind of illness--of a disorder which oppressed him--and of an earnest desire to see me.

Explanation:

These two sentences contribute to the overall eerie mood that we find in this text of "The Fall of the House of Usher." In the first sentence, the author talks about a "mansion of gloom." This conveys the idea of a house that is old, abandoned, or that promises something terrible. The second sentence tells us that the author of the letter is "oppressed" by a disorder and desperate to see the speaker. This also appears to be a premonition of something terrible to come. Both of these give an eerie mood to the text.