1. Reread paragraph 2 of "The Fall of the House of Usher." Mark independent and dependent clauses. Then, classify each sentence as
simple, compound, complex, or compound-complex.

I inferred this to be paragraph 2 of the "The Fall of the House of Usher";

"Nevertheless, in this mansion of gloom I now proposed to myself a sojourn of some weeks. Its proprietor, Roderick Usher, had been one of my boon companions in boyhood; but many years had elapsed 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 importunate nature, had admitted of no other than a personal reply. The MS. gave evidence of nervous agitation. The writer spoke of acute bodily illness—of a mental 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, some alleviation of his malady. It was the manner in which all this, and much more, was said—it was the apparent heart that went with his request—which allowed me no room for hesitation; and I accordingly obeyed forthwith what I still considered a very singular summons".

Explanation:

Note, A  simple sentence is one that contains one independent clause; a clause refers to a group of words that has both a subject and a predicate.

Here are examples from the paragraphs;

A Compound sentence contains two or more independent clauses joined either by a comma and a coordinating conjunction (and, but, or) or by a semicolon. Here are some examples from the paragraphs;

A Complex sentence is one containing one independent clause and one or more dependent clauses. Here are some examples from the paragraphs;

A Compound-complex sentence usually contains two or more independent clauses and one or more dependent clauses. Here are some examples from the paragraphs;  

the mending wall was written by robert frost

i have identified the gerund in this sentence by writing it in all capitals.

gerund phrase: writing it in all capitals

gerund use: object of preposition